Updated composer.json log4php version to 2.3.0

This now matches PAMI to allow composer installation of both PAGI and PAMI in the same project without a conflict.

Author: wormling

composer.json

@@ -20,6 +20,6 @@
   },
   "require": {
     "php": ">=5.3.3",
-    "apache/log4php": ">=2.1.0"
+    "apache/log4php": "2.3.0"
   }
 }