ci: test against 8.2 only

Author: lotyp

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-22.04"]
-        php: ["8.1", "8.2"]
+        php: ["8.2"]
     steps:
       - name: 📦 Check out the codebase
         uses: actions/checkout@v3