build(deps-dev): bump the vitest group with 2 updates (#342)

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


Updates `@vitest/coverage-istanbul` from 4.1.7 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/coverage-istanbul)

Updates `vitest` from 4.1.7 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/coverage-istanbul"
  dependency-version: 4.1.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: vitest
- dependency-name: vitest
  dependency-version: 4.1.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: vitest
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

bun.lock

@@ -44,7 +44,7 @@
     "@types/react": "19.2.15",
     "@types/react-dom": "19.2.3",
     "@vitejs/plugin-react": "5.1.4",
-    "@vitest/coverage-istanbul": "4.1.7",
+    "@vitest/coverage-istanbul": "4.1.8",
     "ajv": "8.18.0",
     "ajv-formats": "3.0.1",
     "bootstrap": "5.3.8",
@@ -71,6 +71,6 @@
     "typescript": "5.9.3",
     "typescript-eslint": "8.60.0",
     "vite": "7.3.3",
-    "vitest": "4.1.7"
+    "vitest": "4.1.8"
   }
 }