Upgrade to Maven Wrapper 3.9.3.

See #2614

Author: mp911de

.mvn/wrapper/maven-wrapper.properties

@@ -1,3 +1,3 @@
-#Tue Jun 13 08:54:05 CEST 2023
+#Mon Jul 03 09:48:29 CEST 2023
 wrapperUrl=https\://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
-distributionUrl=https\://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.2/apache-maven-3.9.2-bin.zip
+distributionUrl=https\://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.3/apache-maven-3.9.3-bin.zip