Bump haskell-actions/setup from 2.7.7 to 2.7.8 (#261)

Bumps [haskell-actions/setup](https://github.com/haskell-actions/setup) from 2.7.7 to 2.7.8.
- [Release notes](https://github.com/haskell-actions/setup/releases)
- [Commits](haskell-actions/setup@e447c4c...f5975f0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yaml

@@ -32,7 +32,7 @@ jobs:
           key: build-${{ hashFiles('app/**', 'src/**', 'test/**') }}
           restore-keys: build-
 
-      - uses: haskell-actions/setup@e447c4c045e7744463435b4b731e125861006ebb # v2.7.7
+      - uses: haskell-actions/setup@f5975f0810e252c045abd64a590c955a63f848db # v2.7.8
         with:
           enable-stack: true