chore(deps-dev): bump vitest and @vitest/coverage-v8

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) and [@vitest/coverage-v8](https://github.com/vitest-dev/vitest/tree/HEAD/packages/coverage-v8). These dependencies needed to be updated together.

Updates `vitest` from 2.1.4 to 2.1.9
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.9/packages/vitest)

Updates `@vitest/coverage-v8` from 2.1.4 to 2.1.9
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.9/packages/coverage-v8)

---
updated-dependencies:
- dependency-name: vitest
  dependency-type: direct:development
- dependency-name: "@vitest/coverage-v8"
  dependency-type: direct:development
...

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

package.json

@@ -19,7 +19,7 @@
     "@smithy/property-provider": "^3.1.7",
     "@types/node": "^22.9.0",
     "@vercel/ncc": "^0.38.2",
-    "@vitest/coverage-v8": "^2.1.3",
+    "@vitest/coverage-v8": "^2.1.9",
     "aws-sdk-client-mock": "^4.1.0",
     "cpy-cli": "^5.0.0",
     "del-cli": "^6.0.0",
@@ -27,7 +27,7 @@
     "memfs": "^4.14.0",
     "standard-version": "^9.5.0",
     "typescript": "^5.6.3",
-    "vitest": "^2.1.3"
+    "vitest": "^2.1.9"
   },
   "dependencies": {
     "@actions/core": "^1.11.1",