Bump com.puppycrawl.tools:checkstyle from 12.2.0 to 12.3.0

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 12.2.0 to 12.3.0.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-12.2.0...checkstyle-12.3.0)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 12.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -28,7 +28,7 @@
     <pmd-plugin.version>3.28.0</pmd-plugin.version>
     <pmd.version>7.19.0</pmd.version>
     <checkstyle-plugin.version>3.6.0</checkstyle-plugin.version>
-    <checkstyle.version>12.2.0</checkstyle.version>
+    <checkstyle.version>12.3.0</checkstyle.version>
 
     <!-- SonarCloud setup -->
     <sonar.projectKey>SvenWoltmann_java-collections-guide</sonar.projectKey>