See #23875: Use SNAPSHOT instead of 1.0-SNAPSHOT since that is what o…

…ur scripts currently publish

This should fix the Jenkins build for plugins.

Note: Maven warns that this may break in the future, in which case we'll have to
change our processes.

pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.openstreetmap.josm.plugins</groupId>
         <artifactId>plugin-root</artifactId>
-        <version>1.0-SNAPSHOT</version>
+        <version>SNAPSHOT</version>
     </parent>
     <artifactId>continuosDownload</artifactId>