Raised workflow php version

Author: peldax

.github/workflows/php.yml

@@ -67,7 +67,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '7.4'
+          php-version: '8.0'
           ini-values: zend.assertions=1, assert.exception=1
         env:
           update: true