chore(deps): update vitest monorepo to v4.0.15

Author: renovate[bot]

package.json

@@ -74,7 +74,7 @@
     "@types/debug": "4.1.12",
     "@types/lodash.sortby": "4.7.9",
     "@types/node": "24.10.3",
-    "@vitest/ui": "4.0.14",
+    "@vitest/ui": "4.0.15",
     "bob-the-bundler": "7.0.1",
     "graphql": "16.12.0",
     "lodash.sortby": "4.7.0",
@@ -84,7 +84,7 @@
     "strip-indent": "4.1.1",
     "tsx": "4.20.6",
     "typescript": "5.9.3",
-    "vitest": "4.0.14"
+    "vitest": "4.0.15"
   },
   "resolutions": {
     "braces": "3.0.3"