Update dependency @testing-library/jest-dom to v5.16.5

Author: renovate[bot]

blog-frontend/package-lock.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@testing-library/jest-dom": "5.14.1",
+    "@testing-library/jest-dom": "5.16.5",
     "@testing-library/react": "11.2.7",
     "@testing-library/user-event": "12.8.3",
     "@types/jest": "26.0.24",