fix: update Redis service configuration and remove unused environment variables

Author: kshitijrajsharma

.github/workflows/test_backend_build.yml

@@ -26,7 +26,8 @@ jobs:
         options: >-
           --health-cmd "redis-cli ping"
           --health-interval 10s
-
+        ports:
+          - 6379:6379
       postgres:
         image: postgis/postgis:14-3.2
         env:
@@ -71,8 +72,6 @@ jobs:
           echo "DATABASE_URL=postgis://admin:password@localhost:5432/ai" >> $GITHUB_ENV
           echo "RAMP_HOME=${{ github.workspace }}" >> $GITHUB_ENV
           echo "TRAINING_WORKSPACE=${{ github.workspace }}/backend/training" >> $GITHUB_ENV
-          echo "CELERY_BROKER_URL=redis://redis:6379/0" >> $GITHUB_ENV
-          echo "CELERY_RESULT_BACKEND=redis://redis:6379/0" >> $GITHUB_ENV
       - name: Run migrations
         env:
           TESTING_TOKEN: ${{ secrets.TESTING_TOKEN }}