Bump pmd.version from 6.55.0 to 7.0.0

Bumps `pmd.version` from 6.55.0 to 7.0.0.

Updates `net.sourceforge.pmd:pmd-core` from 6.55.0 to 7.0.0
- [Release notes](https://github.com/pmd/pmd/releases)
- [Changelog](https://github.com/pmd/pmd/blob/master/docs/render_release_notes.rb)
- [Commits](pmd/pmd@pmd_releases/6.55.0...pmd_releases/7.0.0)

Updates `net.sourceforge.pmd:pmd-java` from 6.55.0 to 7.0.0
- [Release notes](https://github.com/pmd/pmd/releases)
- [Changelog](https://github.com/pmd/pmd/blob/master/docs/render_release_notes.rb)
- [Commits](pmd/pmd@pmd_releases/6.55.0...pmd_releases/7.0.0)

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

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

Author: dependabot[bot]

Diff for: pom.xml

@@ -24,7 +24,7 @@
         <spotbugs-annotations.version>4.8.3</spotbugs-annotations.version>
         <findsecbugs.version>1.13.0</findsecbugs.version>
         <pmd-plugin.version>3.21.2</pmd-plugin.version>
-        <pmd.version>6.55.0</pmd.version>
+        <pmd.version>7.0.0</pmd.version>
         <checkstyle-plugin.version>3.3.1</checkstyle-plugin.version>
         <checkstyle.version>10.14.2</checkstyle.version>