docs: bump chart version, bump app to reflect image change

flink/Chart.yaml

@@ -1,8 +1,8 @@
 apiVersion: v1
-appVersion: "1.10.1"
+appVersion: 1.11.2
 description: Chart for Apache Flink
 name: flink
-version: 0.1.17
+version: 0.1.18
 maintainers:
   - name: charts-maintainers
     email: charts-maintainers@riskfocus.com