folly: 2019.03.18.00 -> 2019.04.22.00

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/folly/versions

pkgs/development/libraries/folly/default.nix

@@ -3,13 +3,13 @@
 
 stdenv.mkDerivation rec {
   name = "folly-${version}";
-  version = "2019.03.18.00";
+  version = "2019.04.22.00";
 
   src = fetchFromGitHub {
     owner = "facebook";
     repo = "folly";
     rev = "v${version}";
-    sha256 = "0g7c2lq4prcw9dd5r4q62l8kqm8frczrfq8m4mgs22np60yvmb6d";
+    sha256 = "08aniprv2a96d3k36k668maq9nysxh0cm58i0hvy71cqcmc97h7p";
   };
 
   nativeBuildInputs = [ cmake ];