Update test.yml

Author: bram123

.github/workflows/test.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 7.1
+          php-version: 7.4
           coverage: none
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress --no-suggest