Bump haskell-actions/setup in the github-actions group

Bumps the github-actions group with 1 update: [haskell-actions/setup](https://github.com/haskell-actions/setup).


Updates `haskell-actions/setup` from 2.7.8 to 2.7.9
- [Release notes](https://github.com/haskell-actions/setup/releases)
- [Commits](haskell-actions/setup@f5975f0...bbd90a2)

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

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

.github/workflows/cabal-ci.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/[email protected]
         with:
           submodules: true
-      - uses: haskell-actions/setup@f5975f0810e252c045abd64a590c955a63f848db # v2.7.8
+      - uses: haskell-actions/setup@bbd90a29996ac33b1c644a42206e312fc0379748 # v2.7.9
         with:
           ghc-version: ${{ matrix.version.ghc }}
           cabal-version: ${{ matrix.version.cabal }}

.github/workflows/stack-ci.yml

@@ -83,7 +83,7 @@ jobs:
       # Install Stack without GHC first, so we have an opportunity to cache the
       # Pantry package index.
       - name: Install Stack
-        uses: haskell-actions/setup@f5975f0810e252c045abd64a590c955a63f848db # v2.7.8
+        uses: haskell-actions/setup@bbd90a29996ac33b1c644a42206e312fc0379748 # v2.7.9
         id: setup-stack
         with:
           enable-stack: true