[MEAR-295] Update prerequisites - require Maven 3.1.1

pom.xml

@@ -82,7 +82,7 @@
   <properties>
     <mavenArchiverVersion>3.5.0</mavenArchiverVersion>
     <mavenFilteringVersion>3.1.1</mavenFilteringVersion>
-    <mavenVersion>3.0</mavenVersion>
+    <mavenVersion>3.1.1</mavenVersion>
     <javaVersion>7</javaVersion>
     <surefire.version>2.22.2</surefire.version>
     <project.build.outputTimestamp>2020-09-26T20:10:30Z</project.build.outputTimestamp>
@@ -159,11 +159,6 @@
       <artifactId>maven-shared-utils</artifactId>
       <version>3.3.3</version>
     </dependency>
-    <dependency>
-      <groupId>org.sonatype.sisu</groupId>
-      <artifactId>sisu-inject-plexus</artifactId>
-      <version>1.4.3.2</version>
-    </dependency>
 
     <dependency>
       <groupId>org.apache.maven.shared</groupId>