deps: bump org.apache.maven.plugins:maven-checkstyle-plugin (#3342)

Bumps [org.apache.maven.plugins:maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.5.0 to 3.6.0.
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.5.0...maven-checkstyle-plugin-3.6.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-checkstyle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -59,7 +59,7 @@
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
 		<nexus-staging-plugin.version>1.7.0</nexus-staging-plugin.version>
-		<maven-checkstyle-plugin.version>3.5.0</maven-checkstyle-plugin.version>
+		<maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
 		<checkstyle-rules.version>9.3</checkstyle-rules.version>
 		<asciidoctor-maven-plugin.version>2.0.0</asciidoctor-maven-plugin.version>
 		<errorprone.version>2.30.0</errorprone.version>

spring-cloud-gcp-samples/pom.xml

@@ -27,7 +27,7 @@
 		<testcontainers.version>1.20.3</testcontainers.version>
 
 		<!-- Checkstyle versions. Keep in sync with ../pom.xml -->
-		<maven-checkstyle-plugin.version>3.5.0</maven-checkstyle-plugin.version>
+		<maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
 		<checkstyle-rules.version>9.3</checkstyle-rules.version>
 
 		<!-- App engine plugin version, used to deploy sample apps -->