Update CHANGELOG.md

Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

Author: adwk67

CHANGELOG.md

@@ -9,7 +9,8 @@
 - Bump `stackable-operator` to 0.110.0 and `kube` to 3.1.0 ([#719]).
 - Support setting `clientAuthenticationMethod` for OIDC authentication. The value is passed through to the Flask-AppBuilder config as `token_endpoint_auth_method` ([#719]).
 - BREAKING: Rename `EXPERIMENTAL_FILE_HEADER` and `EXPERIMENTAL_FILE_FOOTER` in `superset_config.py` for arbitrary Python code to `FILE_HEADER` and `FILE_FOOTER`  ([#719], [#721]).
-- Use an internal secret for the secret-key ([#722]).
+- Use an internal Secret for the Superset `SECRET_KEY`.
+  Going forward, the operator will automatically create the Secret in case it doesn't exist ([#722]).
 - BREAKING: The `.clusterConfig.credentialsSecret` field has been renamed to `.clusterConfig.credentialsSecretName` for consistency ([#722]).
 - BREAKING: Implement generic database connection.
   This means you need to replace your simple database connection string with a typed struct.