Run tests on php 8.1

Author: amouhzi

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0']
+        php: ['5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
     steps:
       ## checkout the repoistory §
       - name: Checkout Repo
@@ -56,4 +56,4 @@ jobs:
           chmod +x ./cc-test-reporter
           ./cc-test-reporter after-build -t clover
         if: matrix.php == '7.1'
-        continue-on-error: true # if is fork
+        continue-on-error: true # if is fork