build(deps): update dependency org.apache.maven.plugins:maven-checkstyle-plugin to v3.6.0

Author: renovate-bot

samples/snippets/pom.xml

@@ -192,7 +192,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.5.0</version>
+        <version>3.6.0</version>
         <configuration>
           <!-- exclude protoc generated file from checkstyle validation -->
           <excludes>**/SingerProto.java</excludes>