Fix PHP-8.0 skipping for community steps

github.ref refers to master here, even for other branches.

Author: iluuu1994

.github/workflows/nightly.yml

@@ -233,7 +233,7 @@ jobs:
           echo opcache.protect_memory=1 >> /etc/php.d/opcache.ini
           echo opcache.jit_buffer_size=1G >> /etc/php.d/opcache.ini
       - name: Test Laravel
-        if: github.ref != 'refs/heads/PHP-8.0'
+        if: matrix.branch.ref != 'refs/heads/PHP-8.0'
         run: |
           git clone https://github.com/laravel/framework.git --branch=master --depth=1
           cd framework
@@ -247,7 +247,7 @@ jobs:
             exit 1
           fi
       - name: Test Symfony
-        if: github.ref != 'refs/heads/PHP-8.0'
+        if: matrix.branch.ref != 'refs/heads/PHP-8.0'
         run: |
           git clone https://github.com/symfony/symfony.git --depth=1
           cd symfony