Upgrade Checkstyle 12.0.1 -> 12.1.1

[Picnic-DevPla-Bot]

This PR contains the following updates:

Package	Type	Update	Change
Checkstyle (source)	build	minor	12.0.1 -> 12.1.1

---

• If you want to rebase/retry this PR, check this box

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[Stephan202]

Suggested commit message:

Upgrade Checkstyle 12.0.1 -> 12.1.1 (#1928)

See:
- https://checkstyle.sourceforge.io/releasenotes.html
- https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.0
- https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.1
- https://github.com/checkstyle/checkstyle/compare/checkstyle-12.0.1...checkstyle-12.1.1

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[Stephan202]

Version 12.1.1 LGTM too; updated the suggested commit message.

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[github-actions]

Suggested commit message:

Upgrade Checkstyle 12.0.1 -> 12.1.1 (#1928)

See:
- https://checkstyle.sourceforge.io/releasenotes.html
- https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.0
- https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.1
- https://github.com/checkstyle/checkstyle/compare/checkstyle-12.0.1...checkstyle-12.1.1