pkg-config supplied in GitHub Hosted Runner for macOS

`pkg-config` is now supplied in the GitHub Hosted Runner for macOS. See actions/runner-images#7125.

Author: mpilgrem

.github/workflows/integration-tests.yml

@@ -39,11 +39,6 @@ jobs:
           release-args: ""
           cache-bust: "23"
     steps:
-    - name: Setup macOS
-      if: startsWith(runner.os, 'macOS')
-      run: |
-        # pkg-config added because it is required by package digest-0.0.1.4.
-        brew install pkg-config
     - name: Clone project
       uses: actions/checkout@v3
     - name: Cache dependencies on Unix-like OS

.github/workflows/unit-tests.yml

@@ -52,11 +52,6 @@ jobs:
           extra-suffix: ""
           stack-args: ""
     steps:
-    - name: Setup macOS
-      if: startsWith(runner.os, 'macOS')
-      run: |
-        # pkg-config added because it is required by package digest-0.0.1.4.
-        brew install pkg-config
     - name: Clone project
       uses: actions/checkout@v3
     - name: Cache dependencies on Unix-like OS