Bump org.apache.maven.plugins:maven-checkstyle-plugin from 2.17 to 3.6.0

Bumps [org.apache.maven.plugins:maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 2.17 to 3.6.0.
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-2.17...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-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -80,7 +80,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.17</version>
+        <version>3.6.0</version>
         <executions>
           <execution>
             <id>checkstyle</id>
@@ -167,7 +167,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.17</version>
+        <version>3.6.0</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <includeTestSourceDirectory>true</includeTestSourceDirectory>