Specify exposed redis port in CI

.github/workflows/test-suite.yaml

@@ -9,6 +9,8 @@ jobs:
     services:
       redis:
         image: redis:6.2
+        ports:
+          - 6379:6379
         options: --health-cmd "redis-cli ping" --health-interval=10s --health-timeout=5s --health-retries=3
 
     strategy: