Update to Maven 4

pom.xml

@@ -64,7 +64,7 @@
 		<cipherVersion>2.1.0</cipherVersion>
 		<pluginToolsVersion>3.15.0</pluginToolsVersion>
 		<jgit-version>6.10.0.202406032230-r</jgit-version>
-		<maven-version>3.9.9</maven-version>
+		<maven-version>4.0.0-beta-4</maven-version>
 		<sisu-version>0.9.0.M3</sisu-version>
 		<minimal-maven-version>3.9.0</minimal-maven-version>
 		<!-- When updating surefire version, double-check Import-Package statements generated by bnd-maven-plugin and possibly adapt instructions in various bnd.bnd files -->