chore(deps-dev): Bump vitest and @vitest/coverage-istanbul

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

Updates `vitest` from 3.2.4 to 4.0.7
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.7/packages/vitest)

Updates `@vitest/coverage-istanbul` from 3.2.4 to 4.0.7
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.7/packages/coverage-istanbul)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.0.7
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: "@vitest/coverage-istanbul"
  dependency-version: 4.0.7
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -32,7 +32,7 @@
   "devDependencies": {
     "@eslint/js": "^9.38.0",
     "@tsconfig/node20": "^20.1.6",
-    "@vitest/coverage-istanbul": "^3.2.4",
+    "@vitest/coverage-istanbul": "^4.0.7",
     "cspell": "^9.2.2",
     "eslint": "^9.38.0",
     "eslint-plugin-n": "^17.23.1",
@@ -41,7 +41,7 @@
     "prettier": "^3.6.2",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.46.2",
-    "vitest": "^3.2.4"
+    "vitest": "^4.0.7"
   },
   "files": [
     "dist/**/*.js",