drop maven requirement to 3.8 to support setup-java

Author: LitschiW

pom.xml

@@ -167,7 +167,7 @@
                                     <version>${maven.compiler.release}</version>
                                 </requireJavaVersion>
                                 <requireMavenVersion>
-                                    <version>3.9.0</version>
+                                    <version>3.8.0</version>
                                 </requireMavenVersion>
                             </rules>
                         </configuration>