Bump flinkVersion from 2.1.1 to 2.2.0

Bumps `flinkVersion` from 2.1.1 to 2.2.0.

Updates `org.apache.flink:flink-streaming-java` from 2.1.1 to 2.2.0
- [Commits](apache/flink@release-2.1.1...release-2.2.0)

Updates `org.apache.flink:flink-test-utils` from 2.1.1 to 2.2.0

---
updated-dependencies:
- dependency-name: org.apache.flink:flink-streaming-java
  dependency-version: 2.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.flink:flink-test-utils
  dependency-version: 2.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Dockerfile

@@ -2,7 +2,7 @@ FROM gradle:9.2.0-jdk21 as builder
 COPY . .
 RUN gradle shadowJar
 
-FROM flink:2.1.1-java21
+FROM flink:2.2.0-java21
 RUN echo "metrics.reporters: prom" >> "$FLINK_HOME/conf/config.yaml"; \
     echo "metrics.reporter.prom.factory.class: org.apache.flink.metrics.prometheus.PrometheusReporterFactory" >> "$FLINK_HOME/conf/config.yaml"
 COPY --from=builder /home/gradle/build/libs/*.jar $FLINK_HOME/usrlib/

README.md

@@ -1,6 +1,6 @@
 [![Actions Status](https://github.com/mbode/flink-prometheus-example/workflows/Gradle/badge.svg)](https://github.com/mbode/flink-prometheus-example/actions)
 [![codecov](https://codecov.io/gh/mbode/flink-prometheus-example/branch/master/graph/badge.svg)](https://codecov.io/gh/mbode/flink-prometheus-example)
-[![Flink v2.1.1](https://img.shields.io/badge/flink-v2.1.1-blue.svg)](https://github.com/apache/flink/releases/tag/release-2.1.1)
+[![Flink v2.2.0](https://img.shields.io/badge/flink-v2.2.0-blue.svg)](https://github.com/apache/flink/releases/tag/release-2.2.0)
 [![Prometheus v3.6.0](https://img.shields.io/badge/prometheus-v3.6.0-blue.svg)](https://github.com/prometheus/prometheus/releases/tag/v3.6.0)
 
 This repository contains the live demo to my talk _Monitoring Flink with Prometheus_, which I have given at:

build.gradle.kts

@@ -18,7 +18,7 @@ java {
 
 repositories { mavenCentral() }
 
-val flinkVersion = "2.1.1"
+val flinkVersion = "2.2.0"
 
 dependencies {
     compileOnly("org.apache.flink:flink-streaming-java:$flinkVersion")