Fixed php versions

Author: thelfensdrfer

.github/workflows/phpunit.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ['7.3', '7.3', '7.4', '8.0']
+        php-versions: ['7.2', '7.3', '7.4', '8.0']
 
     name: PHPUnit ${{ matrix.php-versions }}