build(deps): bump postcss and styled-components in /frontend

[dependabot]

Bumps postcss and styled-components. These dependencies needed to be updated together.
Updates postcss from 8.5.6 to 8.5.15

Release notes

Sourced from postcss's releases.

8.5.15

• Fixed declaration parsing performance (by @​homanp).

8.5.14

• Fixed custom syntax regression (by @​43081j).

8.5.13

• Fixed postcss-scss commend regression.

8.5.12

• Fixed reading any file via user-generated CSS.
• Added opts.unsafeMap to disable checks.

8.5.11

• Fixed nested brackets parsing performance (by @​offset).

8.5.10

• Fixed XSS via unescaped </style> in non-bundler cases (by @​TharVid).

8.5.9

• Speed up source map encoding paring in case of the error.

8.5.8

• Fixed Processor#version.

8.5.7

• Improved source map annotation cleaning performance (by CodeAnt AI).

Changelog

Sourced from postcss's changelog.

8.5.15

• Fixed declaration parsing performance (by @​homanp).

8.5.14

• Fixed custom syntax regression (by @​43081j).

8.5.13

• Fixed postcss-scss commend regression.

8.5.12

• Fixed reading any file via user-generated CSS.
• Added opts.unsafeMap to disable checks.

8.5.11

• Fixed nested brackets parsing performance (by @​offset).

8.5.10

• Fixed XSS via unescaped </style> in non-bundler cases (by @​TharVid).

8.5.9

• Speed up source map encoding paring in case of the error.

8.5.8

• Fixed Processor#version.

8.5.7

• Improved source map annotation cleaning performance (by CodeAnt AI).

Commits

• eae46db Release 8.5.15 version
• 79508ff Update CI actions
• b128e21 Speed up declaration parsing by avoiding creating new array on each token
• 9825dca Fix code format
• 55789c8 Update dependencies
• 84fbbe9 Install older pnpm action for old Node.js
• 9f860bd Revert pnpm action for old Node.js
• 0877198 Update CI actions
• b2d1a33 Fix linter warnings
• 0700dac Merge pull request #2088 from rootvector2/add-oss-fuzz-harness
• Additional commits viewable in compare view

Updates styled-components from 6.3.9 to 6.4.2

Release notes

Sourced from styled-components's releases.

styled-components@6.4.2

Patch Changes

• 9945904: Restore TypeScript prop autocomplete inside the JSX of a styled component once the first attribute is typed.
• 9945904: Apply all chain levels' styles when an extended styled component renders with the as prop under Preact's react-compat.
• 9945904: Respect a custom toString on plain value objects (e.g. design tokens) when interpolated into a styled component, rather than walking the object's keys as CSS declarations.
• 9945904: Fix a TypeScript error when wrapping a component whose props include an as prop with a non-string type (such as Next.js Link's as?: Url). The styled component now accepts either the styled-components polymorphism value or the wrapped component's own as type, so spreading the wrapped component's props onto the styled component is assignable again.
• 9945904: Restore reliable styling in production browser bundles built without a runtime process global.

styled-components@6.4.2-prerelease-20260516150535

d20b88e9bc16e234f5f2c2b3a7c7d7c0472d0edd Fix a TypeScript error when wrapping a component whose props include an as prop with a non-string type (such as Next.js Link's as?: Url). The styled component now accepts either the styled-components polymorphism value or the wrapped component's own as type, so spreading the wrapped component's props onto the styled component is assignable again.

Full Changelog: styled-components/styled-components@styled-components@6.4.2-prerelease-20260514185513...styled-components@6.4.2-prerelease-20260516150535

styled-components@6.4.2-prerelease-20260514185513

Internal changes only.

Full Changelog: styled-components/styled-components@styled-components@6.4.2-prerelease-20260514184932...styled-components@6.4.2-prerelease-20260514185513

styled-components@6.4.2-prerelease-20260514184932

No new changes since the previous release. (Debugging the changelog generation in the prerelease builds.)

Full Changelog: styled-components/styled-components@styled-components@6.4.2-prerelease-20260514182414...styled-components@6.4.2-prerelease-20260514184932

styled-components@6.4.2-prerelease-20260514182414

Patch Changes

• 9945904e: Restore TypeScript prop autocomplete inside the JSX of a styled component once the first attribute is typed.

• 9945904e: Apply all chain levels' styles when an extended styled component renders with the as prop under Preact's react-compat.

• 9945904e: Respect a custom toString on plain value objects (e.g. design tokens) when interpolated into a styled component, rather than walking the object's keys as CSS declarations.

• 9945904e: Fix a TypeScript error when wrapping a component whose props include an as prop with a non-string type (such as Next.js Link's as?: Url). The styled-components as and forwardedAs props now consistently override the wrapped component's same-named props instead of colliding with them.

• 9945904e: Restore reliable styling in production browser bundles built without a runtime process global.

Full Changelog: styled-components/styled-components@styled-components@6.4.1...styled-components@6.4.2-prerelease-20260514182414

styled-components@6.4.1

Patch Changes

• 49d09ae: Fix a performance regression in 6.4.0 where dynamic createGlobalStyle components caused significant re-render slowdowns. Also restores pre-6.4 cascade ordering when multiple instances of the same createGlobalStyle coexist.
• eca95b2: Fix outdated dev-mode error messages for keyframes-in-untagged-strings and component-selector references that still pointed at www.styled-components.com and described behavior from styled-components v3.

styled-components@6.4.1-prerelease-20260417184545

Full Changelog: https://github.com/styled-components/styled-components/compare/styled-components@6.4.1-prerelease-20260417184031...styled-components@6.4.1-prerelease-20260417184545

styled-components@6.4.1-prerelease-20260417184031

What's Changed

... (truncated)

Commits

• f9f6546 Version Packages
• 1794522 fix: include changesets re-touched since the last prerelease [skip ci]
• 0097cdb ci: branch-scoped Version Packages PR title
• d20b88e fix(types): accept wrapped component's own as type when spreading props (#5...
• 786cd8b fix: don't double-count changesets already posted in a prior prerelease
• 0dd1325 chore: adjust release script
• 4f2923a chore: get 6.x prereleases working properly
• 9945904 6.x bugfixes (#5746)
• f7cddb5 chore: run workflows for 6.x
• 499664e chore: prep to allow 6.x point releases
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
  You can disable automated security fix PRs for this repo from the Security Alerts page.