SIENTIAPDE-1325

Remove unused Couchbase configurations and related code. Refactor Activities class to eliminate Couchbase dependency, updating initialization and shutdown methods. Update README and tests to reflect these changes. Upgrade sientia-dataops-library dependency version in requirements.txt.

values.yaml

@@ -171,13 +171,6 @@ env:
         name: redis
         key: redis-password
 
-  - name: COUCHBASE_CONNECTION_STRING
-    value: "couchbase://sientia.couchbase.svc.cluster.local"
-  - name: COUCHBASE_USERNAME
-    value: "sientia"
-  - name: COUCHBASE_PASSWORD
-    value: "sientia"
-
   - name: MONGODB_USERNAME
     value: "root"
   - name: MONGODB_PASSWORD