Adds PHP 8.1 and 8.2 to the test matrix and removes --ignore-platform-reqs

Author: gsteel

.github/workflows/tests.yml

@@ -36,7 +36,10 @@ jobs:
                       coverage: false
                     - php: '8.0'
                       coverage: false
-                      composer-flags: '--ignore-platform-req=php'
+                    - php: '8.1'
+                      coverage: false
+                    - php: '8.2'
+                      coverage: false
 
         steps:
             - uses: actions/checkout@v2