Update dependency org.apache.flink:flink-walkthroughs to v2.2.0 (#3795)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

flink-walkthroughs/flink-walkthrough-common/pom.xml

@@ -27,7 +27,7 @@ under the License.
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-walkthroughs</artifactId>
-		<version>2.1.1</version>
+		<version>2.2.0</version>
 	</parent>
 
 	<artifactId>flink-walkthrough-common</artifactId>

flink-walkthroughs/flink-walkthrough-datastream-java/pom.xml

@@ -27,7 +27,7 @@ under the License.
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-walkthroughs</artifactId>
-		<version>2.1.1</version>
+		<version>2.2.0</version>
 	</parent>
 
 	<artifactId>flink-walkthrough-datastream-java</artifactId>

flink-walkthroughs/flink-walkthrough-datastream-scala/pom.xml

@@ -27,7 +27,7 @@ under the License.
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-walkthroughs</artifactId>
-		<version>2.1.1</version>
+		<version>2.2.0</version>
 	</parent>
 
 	<artifactId>flink-walkthrough-datastream-scala</artifactId>