Bump com.puppycrawl.tools:checkstyle from 10.12.6 to 10.12.7 in /p3c-pmd

Bumps [com.puppycrawl.tools:checkstyle](https://github.com/checkstyle/checkstyle) from 10.12.6 to 10.12.7.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](checkstyle/checkstyle@checkstyle-10.12.6...checkstyle-10.12.7)

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

Signed-off-by: dependabot[bot] <support@github.com>

p3c-pmd/pom.xml

@@ -54,7 +54,7 @@
         <enforce.activate>true</enforce.activate>
         <maven-enforcer-plugin.version>3.0.0-M3</maven-enforcer-plugin.version>
         <checkstyle.plugin.version>3.3.1</checkstyle.plugin.version>
-        <checkstyle.version>10.12.6</checkstyle.version>
+        <checkstyle.version>10.12.7</checkstyle.version>
         <checkstyle.configdir>src/site/resources/checkstyle
         </checkstyle.configdir>
     </properties>