Update dependency org.apache.maven.plugins:maven-pmd-plugin to v3.28.0

Author: xdev-renovate

pom.xml

@@ -70,7 +70,7 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-pmd-plugin</artifactId>
-						<version>3.27.0</version>
+						<version>3.28.0</version>
 						<configuration>
 							<analysisCache>true</analysisCache>
 							<includeTests>true</includeTests>

vaadin-package-json-optimizer/pom.xml

@@ -301,7 +301,7 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-pmd-plugin</artifactId>
-						<version>3.27.0</version>
+						<version>3.28.0</version>
 						<configuration>
 							<analysisCache>true</analysisCache>
 							<includeTests>true</includeTests>