fix: refactor Firebase deployment workflow to use environment variables for service account credentials

Author: FanyCastro

.github/workflows/firebase-deploy.yml

@@ -42,8 +42,8 @@ jobs:
       - name: Deploy Frontend to Firebase Hosting
         uses: FirebaseExtended/action-hosting-deploy@v0
         with:
-          repoToken: "${{ secrets.GITHUB_TOKEN }}"
-          firebaseServiceAccount: "${{ secrets.FIREBASE_SERVICE_ACCOUNT_THINGS_TO_COMPLETE }}"
+          repoToken: ${{ secrets.GITHUB_TOKEN }}
+          firebaseServiceAccount: ${{ env.GOOGLE_APPLICATION_CREDENTIALS }}
           channelId: live
           projectId: ${{ env.PROJECT_ID }}
 
@@ -53,7 +53,7 @@ jobs:
 
       - uses: 'google-github-actions/auth@v2'
         with:
-          credentials_json: '${{ env.GOOGLE_APPLICATION_CREDENTIALS }}'
+          credentials_json: ${{ env.GOOGLE_APPLICATION_CREDENTIALS }}
 
       - name: Deploy functions
         run: |