Add PHP 8 to matrix

Author: jameslkingsley

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
       max-parallel: 15
       fail-fast: false
       matrix:
-        php-versions: ["7.3", "7.4"]
+        php-versions: ["7.3", "7.4", "8.0"]
         composer-flags: ["--prefer-lowest", "--prefer-stable"]
         env:
           - LARAVEL_VERSION='^7.0'