build(deps): bump net.sourceforge.pmd:pmd-java from 7.11.0 to 7.15.0

Bumps [net.sourceforge.pmd:pmd-java](https://github.com/pmd/pmd) from 7.11.0 to 7.15.0.
- [Release notes](https://github.com/pmd/pmd/releases)
- [Changelog](https://github.com/pmd/pmd/blob/main/docs/render_release_notes.rb)
- [Commits](pmd/pmd@pmd_releases/7.11.0...pmd_releases/7.15.0)

---
updated-dependencies:
- dependency-name: net.sourceforge.pmd:pmd-java
  dependency-version: 7.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

buildSrc/build.gradle

@@ -15,5 +15,5 @@ dependencies {
     implementation "dev.gradleplugins:gradle-plugin-development:1.9.0"
     implementation "io.freefair.gradle:lombok-plugin:8.14"
     implementation "io.github.boolivar.sonatype-portal-publish:gradle-plugin:0.1.0"
-    implementation "net.sourceforge.pmd:pmd-java:7.11.0"
+    implementation "net.sourceforge.pmd:pmd-java:7.15.0"
 }