Bump pmd.version from 7.17.0 to 7.18.0

Bumps `pmd.version` from 7.17.0 to 7.18.0.

Updates `net.sourceforge.pmd:pmd-java` from 7.17.0 to 7.18.0
- [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/7.17.0...pmd_releases/7.18.0)

Updates `net.sourceforge.pmd:pmd-xml` from 7.17.0 to 7.18.0
- [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/7.17.0...pmd_releases/7.18.0)

Updates `net.sourceforge.pmd:pmd-test` from 7.17.0 to 7.18.0
- [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/7.17.0...pmd_releases/7.18.0)

---
updated-dependencies:
- dependency-name: net.sourceforge.pmd:pmd-java
  dependency-version: 7.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.sourceforge.pmd:pmd-xml
  dependency-version: 7.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.sourceforge.pmd:pmd-test
  dependency-version: 7.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -39,7 +39,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.compiler.release>8</maven.compiler.release>
-        <pmd.version>7.17.0</pmd.version> <!-- pmd version used for tests -->
+        <pmd.version>7.18.0</pmd.version> <!-- pmd version used for tests -->
         <surefire.version>3.5.4</surefire.version>
         <junit.version>6.0.0</junit.version>
         <checkstyle.plugin.version>3.6.0</checkstyle.plugin.version>