Add config and data for 4.2-rc1

configs/godotengine.godot.4.2.json

@@ -1,7 +1,7 @@
 {
     "name": "4.2",
     "git_tag": "master",
-    "ref": "64150060f89677eaf11229813ae6c5cf8a873802",
+    "ref": "ad72de508363ca8d10c6b148be44a02cdf12be13",
     "from_ref": "4.1-stable",
     "article": "",
 
@@ -77,6 +77,12 @@
             "ref": "64150060f89677eaf11229813ae6c5cf8a873802",
             "from_ref": "4c96e9676b66d0cc9a25022b019b78f4c20ddc60",
             "article": "https://godotengine.org/article/dev-snapshot-godot-4-2-beta-6/"
+        },
+        {
+            "name": "rc1",
+            "ref": "ad72de508363ca8d10c6b148be44a02cdf12be13",
+            "from_ref": "64150060f89677eaf11229813ae6c5cf8a873802",
+            "article": "https://godotengine.org/article/release-candidate-godot-4-2-rc-1/"
         }
     ]
 }