chore(docs): bump vitest from 3.0.7 to 3.0.9 in /web-app

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 3.0.7 to 3.0.9.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v3.0.9/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

web-app/package-lock.json

@@ -45,6 +45,6 @@
     "typescript": "^5.8.2",
     "typescript-eslint": "^8.26.0",
     "vite": "^6.2.3",
-    "vitest": "^3.0.7"
+    "vitest": "^3.0.9"
   }
 }