chore(deps-dev): bump the vitest group across 1 directory with 2 updates

Bumps the vitest group with 2 updates in the / directory: [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8) and [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest).


Updates `@vitest/coverage-v8` from 3.2.4 to 4.0.1
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.1/packages/coverage-v8)

Updates `vitest` from 3.2.4 to 4.0.1
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.1/packages/vitest)

---
updated-dependencies:
- dependency-name: "@vitest/coverage-v8"
  dependency-version: 4.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: vitest
- dependency-name: vitest
  dependency-version: 4.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: vitest
...

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

Author: dependabot[bot]

examples/app/package.json

@@ -36,7 +36,7 @@
     "source-map-support": "^0.5.21",
     "tsx": "^4.20.6",
     "typescript": "^5.9.3",
-    "vitest": "^3.0.5"
+    "vitest": "^4.0.1"
   },
   "dependencies": {
     "@aws-lambda-powertools/batch": "^2.28.0",