Update dependency firebase-tools to v7

Author: renovate-bot

package.json

@@ -50,7 +50,7 @@
     "clone": "2.1.2",
     "coveralls": "3.0.3",
     "dependency-graph": "0.8.0",
-    "firebase-tools": "6.8.0",
+    "firebase-tools": "7.1.0",
     "glob": "7.1.3",
     "husky": "2.2.0",
     "inquirer": "6.3.1",

packages/auth/package.json

@@ -25,7 +25,7 @@
     "del": "4.1.1",
     "express": "4.16.4",
     "firebase-functions": "2.3.0",
-    "firebase-tools": "6.8.0",
+    "firebase-tools": "7.1.0",
     "google-closure-compiler": "20190415.0.0",
     "google-closure-library": "20190415.0.0",
     "gulp": "4.0.1",