chore(ci): also deploy code-angularjs-org to Firebase

Previously, we only deployed the built files to Google Cloud Storage for
the `code-angularjs-org` Firebase project. This meant that the other
Firebase services (such as functions, hosting, storage) were not updated
when we made changes to their source code or configuration.
(This isn't a problem at the moment, since the code/configuration for
these service changes infrequently, but could bite us in the future.)

This commit fixes this by ensuring that we deploy to all enabled
Firebase services (currently functions, hosting and storage).

.circleci/config.yml

@@ -370,6 +370,20 @@ jobs:
           name: Sync files to code.angularjs.org
           command: |
             gsutil -m rsync -r scripts/code.angularjs.org-firebase/deploy gs://code-angularjs-org-338b8.appspot.com
+        # Install dependencies for Firebase functions to prevent parsing errors during deployment.
+        # See https://github.com/angular/angular.js/pull/16453.
+      - run:
+          name: Install dependencies in `scripts/code.angularjs.org-firebase/functions/`.
+          working_directory: scripts/code.angularjs.org-firebase/functions
+          command: yarn install --frozen-lockfile --ignore-engines --non-interactive
+      - run:
+          name: Deploy to Firebase from `scripts/code.angularjs.org-firebase/`.
+          working_directory: scripts/code.angularjs.org-firebase
+          command: |
+            # Do not use `yarn firebase` as that causes the Firebase CLI to look for `firebase.json`
+            # in the root directory, even if run from inside `scripts/code.angularjs.org-firebase/`.
+            firebase=$(yarn bin)/firebase
+            $firebase deploy --message "Commit:\ $CI_COMMIT" --non-interactive --project "code-angularjs-org-338b8" --token "$FIREBASE_TOKEN"
 
   # The `deploy-docs` job should only run when all of these conditions are true for the build:
   # - It is for the `angular/angular.js` repository (not a fork).