Remove php7 tests

Author: zbateson

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        php: [8.2, 8.1, 8.0, 7.4, 7.3, 7.2, 7.1]
+        php: [8.3, 8.2, 8.1, 8.0]
         stability: [prefer-stable]
 
     name: P${{ matrix.php }}