Merge pull request #25 from apache/dependabot/maven/org.apache.maven.plugins-maven-checkstyle-plugin-3.1.1

Bump maven-checkstyle-plugin from 2.7 to 3.1.1
diff --git a/pom.xml b/pom.xml
index 10fc09e..612171e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -254,7 +254,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
-        <version>3.1.0</version>
+        <version>3.2.0</version>
         <configuration>
           <archive>
             <compress>true</compress>
@@ -398,7 +398,7 @@
           </plugin>
           <plugin>
             <artifactId>maven-pmd-plugin</artifactId>
-            <version>2.3</version>
+            <version>3.14.0</version>
             <configuration>
               <targetJdk>${maven.compile.target}</targetJdk>
             </configuration>
@@ -494,7 +494,7 @@
           <groupId>com.carrotsearch</groupId>
           <artifactId>junit-benchmarks</artifactId>
           <classifier>jdk15</classifier>
-          <version>0.3.0</version>
+          <version>0.7.2</version>
           <scope>test</scope>
         </dependency>
       </dependencies>