chore(ci): fix docs deployment to Firebase (deploy-docs CI job)

Previously, the command used to deploy the docs to Firebase (as part of
the `deploy-docs` CI job) would fail, because no target project was
specified (either directly in the command or indirectly via a
`.firebaserc` file in the working directory).

Example failure:
https://app.circleci.com/pipelines/github/angular/angular.js/
166/workflows/34c692ec-18d4-4422-a1cf-108a91219fa5/jobs/1744

This commit fixes the command by specifying the project via the
`--project` cli argument. It also adds the commit SHA as message to make
it easier to associate a deployment with the corresponding commit.

Closes #17066

.circleci/config.yml

@@ -388,7 +388,7 @@ jobs:
         # Install dependencies for Firebase functions to prevent parsing errors during deployment
         # See https://github.com/angular/angular.js/pull/16453
       - run: yarn --cwd scripts/docs.angularjs.org-firebase/functions
-      - run: yarn firebase deploy --token "$FIREBASE_TOKEN" --only hosting
+      - run: yarn firebase deploy --message  "Commit:\ $CI_COMMIT" --non-interactive --only hosting --project "docs-angularjs-org-9p2" --token "$FIREBASE_TOKEN"
 
 workflows:
   version: 2