Declare separate georchestra maven repo for releases and snapshots

A single repository declaration for both releases and snapshots
forbids adding a local nexus mirror, despite georchestras artifactory
being a single mirror for both types of dependencies.

pom.xml

@@ -91,12 +91,22 @@
         <updatePolicy>always</updatePolicy>
         <checksumPolicy>ignore</checksumPolicy>
       </releases>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+      <id>georchestra</id>
+      <url>https://artifactory.georchestra.org/artifactory/maven</url>
+    </repository>
+    <repository>
+      <releases>
+        <enabled>false</enabled>
+      </releases>
       <snapshots>
         <enabled>true</enabled>
         <updatePolicy>always</updatePolicy>
         <checksumPolicy>ignore</checksumPolicy>
       </snapshots>
-      <id>georchestra</id>
+      <id>georchestra-snapshots</id>
       <url>https://artifactory.georchestra.org/artifactory/maven</url>
     </repository>
   </repositories>