Update tests.yml add PHP 8.4 (#271)

Actually show deprecated warnings

Author: joanhey

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest","macos-latest","windows-latest"]
-        php: ["8.3","8.2","8.1","8.0","7.4"]
+        php: ["8.4","8.3","8.2","8.1","8.0","7.4"]
 
     name: PHP ${{ matrix.php }} - ${{ matrix.os }}