Update pmd.version to v7.26.0 (#440)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -75,7 +75,7 @@
     <maven-release-plugin.version>3.3.1</maven-release-plugin.version>
     <spotbugs-plugin.version>4.10.2.0</spotbugs-plugin.version>
     <spotbugs-findsecbugs-plugin.version>1.14.0</spotbugs-findsecbugs-plugin.version>
-    <pmd.version>7.25.0</pmd.version>
+    <pmd.version>7.26.0</pmd.version>
     <jacoco-maven-plugin.version>0.8.15</jacoco-maven-plugin.version>
     <versions-maven-plugin.version>2.21.0</versions-maven-plugin.version>