Workaround ghcup runner issue

Author: michaelpj

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

@@ -23,6 +23,11 @@ inputs:
 runs:
   using: "composite"
   steps:
+    - name: Workaround runner image issue
+      # https://github.com/actions/runner-images/issues/7061
+      run: sudo chown -R $USER /usr/local/.ghcup
+      shell: bash
+
     - uses: haskell/actions/setup@v2.3.3
       id: HaskEnvSetup
       with: