GA(deps): Bump haskell-actions/setup from 2.6 to 2.7

Bumps [haskell-actions/setup](https://github.com/haskell-actions/setup) from 2.6 to 2.7.
- [Release notes](https://github.com/haskell-actions/setup/releases)
- [Commits](haskell-actions/setup@v2.6...v2.7)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - uses: haskell-actions/setup@v2.6
+    - uses: haskell-actions/setup@v2.7
       id: setup-haskell-cabal
       name: Setup Haskell
       with:
@@ -102,7 +102,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - uses: haskell-actions/setup@v2.6
+    - uses: haskell-actions/setup@v2.7
       name: Setup Haskell Stack
       with:
         ghc-version: ${{ matrix.ghc }}