Use maven-pmd-plugin 3.18.0-pmd7-SNAPSHOT for pmd7

.ci/build.sh

@@ -244,12 +244,15 @@ ${rendered_release_notes}"
 # Runs the dogfood ruleset with the currently built pmd against itself
 #
 function pmd_ci_dogfood() {
+    local mpmdVersion=()
     ./mvnw versions:set -DnewVersion="${PMD_CI_MAVEN_PROJECT_VERSION}-dogfood" -DgenerateBackupPoms=false
     sed -i 's/<version>[0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}.*<\/version>\( *<!-- pmd.dogfood.version -->\)/<version>'"${PMD_CI_MAVEN_PROJECT_VERSION}"'<\/version>\1/' pom.xml
     if [ "${PMD_CI_MAVEN_PROJECT_VERSION}" = "7.0.0-SNAPSHOT" ]; then
         sed -i 's/pmd-dogfood-config\.xml/pmd-dogfood-config7.xml/' pom.xml
+        mpmdVersion=(-Denforcer.skip=true -Dpmd.plugin.version=3.18.0-pmd7-SNAPSHOT)
     fi
     ./mvnw verify --show-version --errors --batch-mode --no-transfer-progress "${PMD_MAVEN_EXTRA_OPTS[@]}" \
+        "${mpmdVersion[@]}" \
         -DskipTests \
         -Dmaven.javadoc.skip=true \
         -Dmaven.source.skip=true \

pom.xml

@@ -965,6 +965,17 @@
                 <enabled>true</enabled>
             </snapshots>
         </pluginRepository>
+        <pluginRepository>
+            <id>apache.snapshots</id>
+            <name>Apache Snapshot Repository</name>
+            <url>https://repository.apache.org/snapshots</url>
+            <releases>
+                <enabled>false</enabled>
+            </releases>
+            <snapshots>
+                <enabled>true</enabled>
+            </snapshots>
+        </pluginRepository>
     </pluginRepositories>
 
     <profiles>