build: bump vitest in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the / directory: [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest).


Updates `vitest` from 2.1.9 to 4.1.8
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Changelog](https://github.com/vitest-dev/vitest/blob/main/docs/releases.md)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.1.8/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.1.8
  dependency-type: direct:development
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
     },
     "devDependencies": {
         "tsx": "^4.20.6",
-        "vitest": "^2.1.9",
+        "vitest": "^4.1.8",
         "typescript": "^5.9.3",
         "prettier": "^3.6.2",
         "@types/node": "^22.18.13",