ci(macos): enable testing using GitHub Actions

* Automated using https://github.com/myii/ssf-formula/pull/443

.github/workflows/kitchen.macos.yml

+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
+name: 'Kitchen (macOS)'
+'on': ['push', 'pull_request']
+
+env:
+  KITCHEN_LOCAL_YAML: 'kitchen.macos.yml'
+
+jobs:
+  test-12:
+    runs-on: 'macos-12'
+    strategy:
+      fail-fast: false
+      matrix:
+        instance:
+          - default-macos-12-latest-py3
+    steps:
+      - name: 'Check out code'
+        uses: 'actions/checkout@v2'
+      - name: 'Set up Bundler cache'
+        uses: 'actions/cache@v1'
+        with:
+          path: 'vendor/bundle'
+          key: "${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}"
+          restore-keys: "${{ runner.os }}-gems-"
+      - name: 'Run Bundler'
+        run: |
+          ruby --version
+          bundle config path vendor/bundle
+          bundle install --jobs 4 --retry 3
+      - name: 'Run Test Kitchen'
+        run: 'bundle exec kitchen verify ${{ matrix.instance }}'
+  test-11:
+    runs-on: 'macos-11'
+    strategy:
+      fail-fast: false
+      matrix:
+        instance:
+          - default-macos-11-latest-py3
+    steps:
+      - name: 'Check out code'
+        uses: 'actions/checkout@v2'
+      - name: 'Set up Bundler cache'
+        uses: 'actions/cache@v1'
+        with:
+          path: 'vendor/bundle'
+          key: "${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}"
+          restore-keys: "${{ runner.os }}-gems-"
+      - name: 'Run Bundler'
+        run: |
+          ruby --version
+          bundle config path vendor/bundle
+          bundle install --jobs 4 --retry 3
+      - name: 'Run Test Kitchen'
+        run: 'bundle exec kitchen verify ${{ matrix.instance }}'
+  test-1015:
+    runs-on: 'macos-10.15'
+    strategy:
+      fail-fast: false
+      matrix:
+        instance:
+          - default-macos-1015-latest-py3
+    steps:
+      - name: 'Check out code'
+        uses: 'actions/checkout@v2'
+      - name: 'Set up Bundler cache'
+        uses: 'actions/cache@v1'
+        with:
+          path: 'vendor/bundle'
+          key: "${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}"
+          restore-keys: "${{ runner.os }}-gems-"
+      - name: 'Run Bundler'
+        run: |
+          ruby --version
+          bundle config path vendor/bundle
+          bundle install --jobs 4 --retry 3
+      - name: 'Run Test Kitchen'
+        run: 'bundle exec kitchen verify ${{ matrix.instance }}'

kitchen.macos.yml

+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
+driver:
+  name: exec
+
+provisioner:
+  sudo: true
+  salt_install: bootstrap
+  salt_bootstrap_options: -P stable latest
+  salt_call_command: /opt/salt/bin/salt-call
+
+platforms:
+  - name: macos-12-latest-py3
+    verifier:
+      inputs:
+        saltmajorversion: 3004
+  - name: macos-11-latest-py3
+    verifier:
+      inputs:
+        saltmajorversion: 3004
+  - name: macos-1015-latest-py3
+    verifier:
+      inputs:
+        saltmajorversion: 3004

test/integration/default/inspec.yml

   - platform-name: gentoo
   - platform-name: almalinux
   - platform-name: rocky
+  - platform-name: mac_os_x
   - platform: windows