exclude php 7.2 for laravel 8

Author: marickvantuil

.github/workflows/run-tests.yml

@@ -28,6 +28,8 @@ jobs:
           - laravel: 5.6.*
             testbench: 3.6.*
         exclude:
+          - laravel: 8.*
+            php: 7.2
           - laravel: 5.7.*
             php: 7.4
           - laravel: 5.6.*