chore(deps): update dependency vitest to v4.0.15 (#1078)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "prettier-plugin-astro": "0.14.1",
     "sharp": "0.34.5",
     "typescript-eslint": "8.48.1",
-    "vitest": "4.0.14",
+    "vitest": "4.0.15",
     "wrangler": "4.51.0"
   },
   "packageManager": "[email protected]"