test: Bump Superset to 6.1.0 in unit test (#739)

Author: Techassi

rust/operator-binary/src/crd/affinity.rs

@@ -44,7 +44,7 @@ mod tests {
           name: simple-superset
         spec:
           image:
-            productVersion: 4.1.4
+            productVersion: 6.1.0
           clusterConfig:
             credentialsSecretName: superset-admin-credentials
             metadataDatabase: