fixup: packacheck commit

Author: harendra-kumar

.github/workflows/haskell.yml

@@ -48,7 +48,7 @@ jobs:
       # packcheck location and revision
       PACKCHECK: "./packcheck.sh"
       PACKCHECK_GITHUB_URL: "https://raw.githubusercontent.com/composewell/packcheck"
-      PACKCHECK_GITHUB_COMMIT: "4767fc8b42a37ab1723cf993836f1d0c1e249182"
+      PACKCHECK_GITHUB_COMMIT: "7c4e1ab7a59b5ed6e92cfd0da67460a6116be4ac"
 
       # Pull token from "secrets" setting of the github repo
       COVERALLS_TOKEN: ${{ secrets.COVERALLS_TOKEN }}