test on laravel 8

Author: marickvantuil

.github/workflows/run-tests.yml

@@ -12,9 +12,11 @@ jobs:
     strategy:
       matrix:
         php: [7.4, 7.3, 7.2]
-        laravel: [7.*, 6.*, 5.8.*, 5.7.*, 5.6.*]
+        laravel: [8.*, 7.*, 6.*, 5.8.*, 5.7.*, 5.6.*]
         os: [ubuntu-latest]
         include:
+          - laravel: 8.*
+            testbench: 6.*
           - laravel: 7.*
             testbench: 5.*
           - laravel: 6.*