Bump com.puppycrawl.tools:checkstyle from 10.18.1 to 10.20.1 (#364)

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 10.18.1 to 10.20.1.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-10.18.1...checkstyle-10.20.1)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -44,7 +44,7 @@
         <maven.javadoc.plugin.version>3.10.0</maven.javadoc.plugin.version>
         <kotlin.version>2.0.20</kotlin.version>
         <checkstyle.maven.plugin.version>3.5.0</checkstyle.maven.plugin.version>
-        <checkstyle.version>10.18.1</checkstyle.version>
+        <checkstyle.version>10.20.1</checkstyle.version>
     </properties>
 
     <distributionManagement>