Update Hackage and Stackage

hackage-src.json

@@ -1,7 +1,7 @@
 {
   "url": "https://github.com/input-output-hk/hackage.nix",
-  "rev": "471495fc0f97481a4d585e33e7292e3f7c26a047",
-  "date": "2019-06-23T01:13:07+00:00",
-  "sha256": "0bbyv66mhpyhlynl0pbn9bg79siq1ck9jji0v38yfpyipr2sn2m7",
+  "rev": "654bffb3a7254eadc771cbdb724bf33296b15c55",
+  "date": "2019-06-24T01:15:59+00:00",
+  "sha256": "1kax1854bcjblfh516q7l6g0j0c6ms0p10kfsds6nl55hxmnja3v",
   "fetchSubmodules": false
 }