Bump the npm_and_yarn group across 1 directory with 4 updates

Bumps the npm_and_yarn group with 3 updates in the /frontend directory: [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite), [flatted](https://github.com/WebReflection/flatted) and [picomatch](https://github.com/micromatch/picomatch).


Updates `vite` from 6.4.1 to 6.4.2
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v6.4.2/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v6.4.2/packages/vite)

Updates `esbuild` from 0.21.5 to 0.25.12
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG-2024.md)
- [Commits](https://github.com/evanw/esbuild/compare/v0.21.5...v0.25.12)

Updates `flatted` from 3.4.0 to 3.4.2
- [Commits](https://github.com/WebReflection/flatted/compare/v3.4.0...v3.4.2)

Updates `picomatch` from 2.3.1 to 2.3.2
- [Release notes](https://github.com/micromatch/picomatch/releases)
- [Changelog](https://github.com/micromatch/picomatch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/picomatch/compare/2.3.1...2.3.2)

Updates `picomatch` from 4.0.3 to 4.0.4
- [Release notes](https://github.com/micromatch/picomatch/releases)
- [Changelog](https://github.com/micromatch/picomatch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/picomatch/compare/2.3.1...2.3.2)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 6.4.2
  dependency-type: direct:development
  dependency-group: npm_and_yarn
- dependency-name: esbuild
  dependency-version: 0.25.12
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: flatted
  dependency-version: 3.4.2
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: picomatch
  dependency-version: 2.3.2
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: picomatch
  dependency-version: 4.0.4
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <support@github.com>

frontend/package.json

@@ -66,7 +66,7 @@
     "tailwindcss": "^3.4.19",
     "typescript": "^5.6.3",
     "typescript-eslint": "^8.19.0",
-    "vite": "^6.0.3",
-    "vitest": "^2.1.0"
+    "vite": "^6.4.2",
+    "vitest": "^4.1.4"
   }
 }