Haskell GHC 8.6.3 and keep curl.

library/haskell

@@ -3,10 +3,10 @@ Maintainers: Darin Morrison <[email protected]> (@freebroccolo),
              Christopher Biscardi <[email protected]> (@ChristopherBiscardi)
 GitRepo: https://github.com/freebroccolo/docker-haskell
 
-Tags: 8.6.2, 8.6, 8, latest
-GitCommit: 5362898713c831feb18b57f106385cac2b5daa1a
+Tags: 8.6.3, 8.6, 8, latest
+GitCommit: 03467e1a14543d83d33833e669249a3c42f7b7c8
 Directory: 8.6
 
 Tags: 8.4.4, 8.4
-GitCommit: 5362898713c831feb18b57f106385cac2b5daa1a
+GitCommit: 03467e1a14543d83d33833e669249a3c42f7b7c8
 Directory: 8.4