web: Normalize use of .toJSON() over .json()

[GirlBossRush]

Details

This PR fixes a runtime error that occurs when using form inputs which are serialized use .json() instead of .toJSON().

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.29%. Comparing base (00639d9) to head (a0bf666).
⚠️ Report is 11 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #21621   +/-   ##
=======================================
  Coverage   92.29%   92.29%           
=======================================
  Files        1032     1032           
  Lines       59789    59789           
  Branches     2537     2537           
=======================================
+ Hits        55183    55184    +1     
+ Misses       4541     4540    -1     
  Partials       65       65           

Flag	Coverage Δ
conformance	36.97% <ø> (+<0.01%)	⬆️
e2e	42.89% <ø> (+<0.01%)	⬆️
integration	33.89% <ø> (+<0.01%)	⬆️
rust	60.50% <ø> (ø)
unit	91.92% <ø> (+<0.01%)	⬆️
unit-migrate	92.02% <ø> (+<0.01%)	⬆️

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[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-a0bf666f21715e9c10faeed7bf0809a8eb768fca
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-a0bf666f21715e9c10faeed7bf0809a8eb768fca

Afterwards, run the upgrade commands from the latest release notes.