tests: test on macOS 14

Author: firstred

.github/workflows/test.yaml

@@ -5,7 +5,7 @@ jobs:
         runs-on: ${{ matrix.operating-system }}
         strategy:
             matrix:
-                operating-system: [ 'macos-latest' ]
+                operating-system: [ 'macos-14' ]
                 php-versions: [ '7.4' ]
         steps:
             -   name: Checkout repo
@@ -41,13 +41,6 @@ jobs:
                 shell: bash
                 run: composer install --no-progress --prefer-dist --optimize-autoloader
 
-            -   name: Install Composer dependencies on macOS + PHP 7.4
-                if: matrix.php-versions == '7.4' && matrix.operating-system == 'macos-latest'
-                shell: bash
-                run: |
-                  composer install --no-progress --prefer-dist --optimize-autoloader
-                  composer require setasign/fpdi:2.6.1
-
             -   name: Test with PHPUnit
                 if: matrix.php-versions != '8.4' || matrix.operating-system != 'ubuntu-latest'
                 env: