Revert "SLING-11168 - Sling Starter 12: Unable to launch Composum"

This reverts commit 251d96e3c5cc5b3d0da3bf98b584a1a2d5945d40.

This way we keep the Starter SNAPSHOT building until the JCR ContentLoader
is released.
diff --git a/src/main/features/oak/oak_base.json b/src/main/features/oak/oak_base.json
index acb2b55..d64d883 100644
--- a/src/main/features/oak/oak_base.json
+++ b/src/main/features/oak/oak_base.json
@@ -134,7 +134,7 @@
             "start-order":"20"
         },
         {
-            "id":"org.apache.sling:org.apache.sling.jcr.contentloader:2.5.2",
+            "id":"org.apache.sling:org.apache.sling.jcr.contentloader:2.5.0",
             "start-order":"20"
         },
         {