build: update `firebase-tools` to the latest version (#34682)

This fixes `Server Error. certificate has expired` errors that cause AIO
deployment to fail.
(Example CI failure: https://circleci.com/gh/angular/angular/578227)

PR Close #34682

aio/package.json

@@ -129,7 +129,7 @@
     "eslint": "^3.19.0",
     "eslint-plugin-jasmine": "^2.2.0",
     "find-free-port": "^2.0.0",
-    "firebase-tools": "^5.1.1",
+    "firebase-tools": "^7.11.0",
     "fs-extra": "^2.1.2",
     "globby": "^6.1.0",
     "hast-util-is-element": "^1.0.0",

package.json

@@ -145,7 +145,7 @@
     "cldrjs": "0.5.0",
     "conventional-changelog": "^2.0.3",
     "entities": "1.1.1",
-    "firebase-tools": "5.1.1",
+    "firebase-tools": "^7.11.0",
     "firefox-profile": "1.0.3",
     "glob": "7.1.2",
     "gulp": "3.9.1",