chore(deps-dev): bump vitest from 2.1.6 to 2.1.8

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 2.1.6 to 2.1.8.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v2.1.8/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

packages/service-utils/package.json

@@ -52,7 +52,7 @@
     "@cloudflare/workers-types": "4.20241112.0",
     "@types/node": "22.10.0",
     "typescript": "5.7.2",
-    "vitest": "2.1.6"
+    "vitest": "2.1.8"
   },
   "scripts": {
     "format": "biome format ./src --write",

packages/thirdweb/package.json

@@ -369,6 +369,6 @@
     "typedoc": "0.26.11",
     "typescript": "5.7.2",
     "vite": "6.0.0",
-    "vitest": "2.1.6"
+    "vitest": "2.1.8"
   }
 }