Fix dependency

Author: schmidt-sebastian

integration/firestore/package.json

@@ -16,7 +16,7 @@
   },
   "devDependencies": {
     "@firebase/app": "0.7.12",
-    "@firebase/firestore": "3.4.1",
+    "@firebase/firestore": "3.4.2",
     "@types/mocha": "9.0.0",
     "gulp": "4.0.2",
     "gulp-filter": "7.0.0",