Update head.hackage

Author: hamishmack

test/cabal.project.local

@@ -24,7 +24,7 @@ repository head.hackage.ghc.haskell.org
      f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
      26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
      7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
-  --sha256: sha256-27lvsC68nAYad999mjvu4YIvElseWcuqr/oavqjINXo=
+  --sha256: sha256-PnyK0Blh/KqyYrAudlcuvz5bLq83yU3ZArQw2I1emSs=
 
 repository ghcjs-overlay
   url: https://raw.githubusercontent.com/input-output-hk/hackage-overlay-ghcjs/ffb32dce467b9a4d27be759fdd2740a6edd09d0b