add php 8.2 into github tests

Author: io-developer

.github/workflows/tests.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.2', '7.3', '7.4', '8.0', '8.1']
+        php-version: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
 
     steps:
       - uses: actions/checkout@v2