Update dependency fetch-mock to v12

Author: renovate[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "@croct/eslint-plugin": "^0.7.0",
     "@types/jest": "^29.2.3",
     "eslint": "^8.57.0",
-    "fetch-mock": "^9.11.0",
+    "fetch-mock": "^12.0.0",
     "jest": "^29.3.1",
     "jest-environment-jsdom": "^29.3.1",
     "jest-extended": "^4.0.0",