Upgrade to 4.0.0-alpha-7 and exclude dependency to sisu (fixes codehaus-plexus#17)

Author: gnodet

pom.xml

@@ -56,7 +56,13 @@ limitations under the License.
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-xml-impl</artifactId>
-      <version>4.0.0-alpha-5</version>
+      <version>4.0.0-alpha-7</version>
+      <exclusions>
+        <exclusion>
+          <groupId>org.eclipse.sisu</groupId>
+          <artifactId>org.eclipse.sisu.plexus</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>org.openjdk.jmh</groupId>