Update to use Maven 4 in migration project

Author: sormuras

junit5-migration-maven/.mvn/wrapper/maven-wrapper.properties

@@ -16,4 +16,4 @@
 # under the License.
 wrapperVersion=3.3.2
 distributionType=only-script
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/4.0.0-rc-3/apache-maven-4.0.0-rc-3-bin.zip