Bump haskell/actions from 2.4.6 to 2.4.7 in /.github/actions/setup-build

Bumps [haskell/actions](https://github.com/haskell/actions) from 2.4.6 to 2.4.7.
- [Release notes](https://github.com/haskell/actions/releases)
- [Commits](haskell/actions@v2.4.6...v2.4.7)

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

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

Author: dependabot[bot]

.github/actions/setup-build/action.yml

@@ -31,7 +31,7 @@ runs:
         sudo chown -R $USER /usr/local/.ghcup
       shell: bash
 
-    - uses: haskell/actions/setup@v2.4.6
+    - uses: haskell/actions/setup@v2.4.7
       id: HaskEnvSetup
       with:
         ghc-version  : ${{ inputs.ghc   }}