Update parent pom version

Author: testower

gbfs-validator-java-cli/pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.entur.gbfs</groupId>
         <artifactId>gbfs-validator-java-parent</artifactId>
-        <version>2.0.56-SNAPSHOT</version>
+        <version>2.0.57-SNAPSHOT</version>
     </parent>
 
     <artifactId>gbfs-validator-java-cli</artifactId>