Fix hassfest dependency rule violations in Home Assistant manifest

[Copilot]

hassfest failed because the integration manifest declared dependencies that conflict with Home Assistant policy: it listed a core-managed package (cryptography) and pinned tmodbus to an incompatible/exact version. This change aligns manifest requirements with HA’s dependency constraints.

• Manifest dependency alignment

  • Removed cryptography>=42 from custom_components/huawei_emma_management/manifest.json (core dependency, should not be declared by custom integration).
  • Replaced tmodbus==0.4.1 with tmodbus>=0.6.2 to match HA compatibility requirements and avoid exact pinning of HA-managed deps.

• Resulting manifest delta

  "requirements": [
    "huawei-solar==3.0.6",
    "tmodbus>=0.6.2"
  ]