chore(deps): update dependency org.apache.maven.plugins:maven-pmd-plugin to v3.26.0

Author: renovate[bot]

pom.xml

@@ -94,7 +94,7 @@
     <spotbugs-maven-plugin.version>4.9.3.0</spotbugs-maven-plugin.version>
     <spotbugs.version>4.9.3</spotbugs.version>
     <properties-maven-plugin.version>1.0.0</properties-maven-plugin.version>
-    <maven-pmd-plugin.version>3.21.2</maven-pmd-plugin.version>
+    <maven-pmd-plugin.version>3.26.0</maven-pmd-plugin.version>
     <p3c-pmd.version>2.2.1.0x</p3c-pmd.version>
     <build-helper-maven-plugin.version>3.6.0</build-helper-maven-plugin.version>
     <maven-build-helper.version>1.5.3</maven-build-helper.version>