[wip] Update testing library

Author: kapantzak

package.json

@@ -16,8 +16,8 @@
     "@grafana/data": "11.1.3",
     "@grafana/toolkit": "9.5.21",
     "@grafana/ui": "11.1.3",
-    "@testing-library/jest-dom": "5.4.0",
-    "@testing-library/react": "^10.0.2",
+    "@testing-library/jest-dom": "6.4.8",
+    "@testing-library/react": "^16.0.0",
     "@testing-library/react-hooks": "^8.0.1",
     "@types/pubsub-js": "^1.8.3"
   },