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]>

Author: dependabot[bot]

.github/workflows/bench.yml

@@ -109,7 +109,7 @@ jobs:
         example: ['cabal', 'lsp-types']
 
     steps:
-    - uses: haskell/actions/setup@v1
+    - uses: haskell/actions/setup@v2
       with:
         ghc-version  : ${{ matrix.ghc   }}
         cabal-version: ${{ matrix.cabal }}