Update pmd.version to v7

Author: renovate[bot]

parent/pom.xml

@@ -59,7 +59,7 @@
 		<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-pmd-plugin -->
 		<maven-pmd-plugin.version>3.21.2</maven-pmd-plugin.version>
 		<!-- https://mvnrepository.com/artifact/net.sourceforge.pmd/pmd -->
-		<pmd.version>6.55.0</pmd.version>
+		<pmd.version>7.7.0</pmd.version>
 		<!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-checkstyle-plugin -->
 		<maven-checkstyle-plugin.version>3.3.1</maven-checkstyle-plugin.version>
 		<!-- https://mvnrepository.com/artifact/com.puppycrawl.tools/checkstyle -->