Merge pull request #1 from haskell-works/upgrade-haskell-build-orb-version

Upgrade haskell-build orb version

Author: newhoggy

.circleci/config.yml

@@ -1,7 +1,7 @@
 version: 2.1
 
 orbs:
-  haskell: haskell-works/haskell-build@2.0.2
+  haskell: haskell-works/haskell-build@4.0.0
   github: haskell-works/github-release@1.2.1
   hackage: haskell-works/hackage@1.0.0