chore: upgrade postcss

[fpaul-1A]

Proposed change

Unblock lock file maintenance
stylelint comes with dependency "postcss": "^8.4.49" which is now resolved to 8.5.1
so we need to make our version of postcss match it

Related issues

- No issue associated -

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 57ae4e0.

Command	Status	Duration	Result
nx run-many --target=test-int	✅ Succeeded	53m 54s	View ↗
nx run-many --target=build --projects=eslint-pl...	✅ Succeeded	2s	View ↗
nx run-many --target=publish --nx-bail --userco...	✅ Succeeded	1m 50s	View ↗
nx run-many --target=test-e2e	✅ Succeeded	9m 5s	View ↗
nx run-many --target=build	✅ Succeeded	18m 1s	View ↗
nx affected --target=lint	✅ Succeeded	14m 56s	View ↗
nx affected --target=test --collectCoverage	✅ Succeeded	10m 20s	View ↗
nx affected --target=package-github-action	✅ Succeeded	2m 34s	View ↗
Additional runs (3)	✅ Succeeded	...	View ↗

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☁️ Nx Cloud last updated this comment at 2025-01-23 10:08:25 UTC

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.92%. Comparing base (eabb580) to head (57ae4e0).
Report is 4 commits behind head on main.

✅ All tests successful. No failed tests found.

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