ci: update test matrix

Author: leeqvip

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.3, 7.4, 8.0, 8.1, 8.2]
+        php: [8.1, 8.2, 8.3, 8.4]
         stability: [prefer-stable]
 
     name: PHP ${{ matrix.php }} - ${{ matrix.stability }}