Test on PHP 8.2

With PHP 8.2 coming out later this year, we should be reading for it's release to ensure all out code works on it.

Refs: reactphp/event-loop#258

Author: WyriHaximus

.github/workflows/ci.yml

@@ -14,6 +14,7 @@ jobs:
           - ubuntu-20.04
           - windows-2019
         php:
+          - 8.2
           - 8.1
           - 8.0
           - 7.4