tests: test PHP < 8 on intel macOS

Author: firstred

.github/workflows/test.yaml

@@ -5,8 +5,45 @@ jobs:
         runs-on: ${{ matrix.operating-system }}
         strategy:
             matrix:
-                operating-system: [ 'macos-13' ]
-                php-versions: [ '7.4' ]
+                operating-system: [ 'ubuntu-24.04', 'windows-2025', 'macos-latest' ]
+                php-versions: [ '8.0', '8.1', '8.2', '8.3', '8.4', '8.5' ]
+                include:
+                    - operating-system: 'ubuntu-24.04'
+                      php-versions: '5.6'
+                    - operating-system: 'windows-2025'
+                      php-versions: '5.6'
+                    - operating-system: 'macos-13'
+                      php-versions: '5.6'
+                    - operating-system: 'ubuntu-24.04'
+                      php-versions: '7.0'
+                    - operating-system: 'windows-2025'
+                      php-versions: '7.0'
+                    - operating-system: 'macos-13'
+                      php-versions: '7.0'
+                    - operating-system: 'ubuntu-24.04'
+                      php-versions: '7.1'
+                    - operating-system: 'windows-2025'
+                      php-versions: '7.1'
+                    - operating-system: 'macos-13'
+                      php-versions: '7.1'
+                    - operating-system: 'ubuntu-24.04'
+                      php-versions: '7.2'
+                    - operating-system: 'windows-2025'
+                      php-versions: '7.2'
+                    - operating-system: 'macos-13'
+                      php-versions: '7.2'
+                    - operating-system: 'ubuntu-24.04'
+                      php-versions: '7.3'
+                    - operating-system: 'windows-2025'
+                      php-versions: '7.3'
+                    - operating-system: 'macos-13'
+                      php-versions: '7.3'
+                    - operating-system:  'ubuntu-24.04'
+                      php-versions: '7.4'
+                    - operating-system: 'windows-2025'
+                      php-versions: '7.4'
+                    - operating-system: 'macos-13'
+                      php-versions: '7.4'
         steps:
             -   name: Checkout repo
                 uses: actions/checkout@v4
@@ -37,7 +74,6 @@ jobs:
                     restore-keys: ${{ runner.os }}-${{ matrix.php-versions }}-composer-
 
             -   name: Install Composer dependencies
-                if: matrix.php-versions != '7.4' || matrix.operating-system != 'macos-latest'
                 shell: bash
                 run: composer install --no-progress --prefer-dist --optimize-autoloader