fix goback

package.json

@@ -28,7 +28,7 @@
     "@angular/cdk": "^11.2.13",
     "@angular/common": "^12.1.2",
     "@angular/core": "^12.1.2",
-    "@angular/fire": "^7.5.0",
+    "@angular/fire": "6.1.5",
     "@angular/forms": "~12.1.2",
     "@angular/localize": "^12.1.2",
     "@angular/material": "^11.2.13",
@@ -135,7 +135,7 @@
     "duration": "^0.2.2",
     "faker": "^5.5.3",
     "fifo-process-queue": "^1.2.0",
-    "firebase": "^9.8.4",
+    "firebase": "^7.0 || ^8.0",
     "g": "^2.0.1",
     "global": "^4.4.0",
     "hammerjs": "^2.0.8",