add php 8.3 tests

Author: RahulDey12

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.4, "8.0", 8.1, 8.2]
+        php: [7.4, "8.0", 8.1, 8.2, 8.3]
 
     name: Tests PHP ${{ matrix.php }}