Bump com.puppycrawl.tools:checkstyle from 11.0.0 to 12.1.0

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 11.0.0 to 12.1.0.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-11.0.0...checkstyle-12.1.0)

---
updated-dependencies:
- dependency-name: com.puppycrawl.tools:checkstyle
  dependency-version: 12.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pom.xml

@@ -97,7 +97,7 @@
 
     <!-- test-dependencies -->
     <assertj.version>3.27.4</assertj.version>
-    <checkstyle.version>11.0.0</checkstyle.version>
+    <checkstyle.version>12.1.0</checkstyle.version>
     <jacoco-maven-plugin.version>0.8.13</jacoco-maven-plugin.version>
     <junit.version>5.13.4</junit.version>
     <mockito5.version>5.18.0</mockito5.version>