Bump the npm-development group across 1 directory with 2 updates

Bumps the npm-development group with 2 updates in the /client directory: [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) and [postcss](https://github.com/postcss/postcss).


Updates `@types/node` from 22.15.21 to 22.15.29
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

Updates `postcss` from 8.5.3 to 8.5.4
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.3...8.5.4)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 22.15.29
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-development
- dependency-name: postcss
  dependency-version: 8.5.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm-development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

client/package-lock.json

@@ -19,9 +19,9 @@
   },
   "devDependencies": {
     "@playwright/test": "^1.52.0",
-    "@types/node": "^22.15.21",
+    "@types/node": "^22.15.29",
     "autoprefixer": "^10.4.21",
-    "postcss": "^8.5.3",
+    "postcss": "^8.5.4",
     "tailwindcss": "^4.1.5"
   }
 }