[MANTRUN-242] Require Maven 3.6.3+

pom.xml

@@ -28,7 +28,7 @@ under the License.
   </parent>
 
   <artifactId>maven-antrun-plugin</artifactId>
-  <version>3.1.1-SNAPSHOT</version>
+  <version>3.2.0-SNAPSHOT</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven AntRun Plugin</name>
@@ -60,7 +60,7 @@ under the License.
   </distributionManagement>
 
   <properties>
-    <mavenVersion>3.2.5</mavenVersion>
+    <mavenVersion>3.6.3</mavenVersion>
     <junit5.version>5.10.2</junit5.version>
     <version.xmlunit>2.9.1</version.xmlunit>
     <project.build.outputTimestamp>2022-04-18T19:40:06Z</project.build.outputTimestamp>
@@ -108,7 +108,6 @@ under the License.
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-xml</artifactId>
-      <version>3.0.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.ant</groupId>