Bump haskell/actions from 1 to 2

Bumps [haskell/actions](https://github.com/haskell/actions) from 1 to 2.
- [Release notes](https://github.com/haskell/actions/releases)
- [Commits](haskell/actions@v1...v2)

---
updated-dependencies:
- dependency-name: haskell/actions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/haskell.yaml

@@ -33,7 +33,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-stack-work-
 
-      - uses: haskell/actions/setup@v1
+      - uses: haskell/actions/setup@v2
         with:
           enable-stack: true