Update vitest monorepo to v3

Author: renovate[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "@types/nunjucks": "3.2.6",
     "@types/semver": "7.5.8",
     "@types/supertest": "6.0.2",
-    "@vitest/coverage-v8": "2.1.8",
+    "@vitest/coverage-v8": "3.0.3",
     "common-tags": "1.8.2",
     "esbuild": "0.24.1",
     "eslint": "9.18.0",
@@ -53,6 +53,6 @@
     "supertest": "7.0.0",
     "typescript": "5.7.3",
     "typescript-eslint": "8.21.0",
-    "vitest": "2.1.8"
+    "vitest": "3.0.3"
   }
 }