Update tests.yml

Author: GrahamCampbell

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['8.1', '8.2', '8.3', '8.4']
+        php: ['8.1', '8.2', '8.3', '8.4']
         composer-flags: ['']
         name: ['']
         include: