Test PHP 8.4 (#23)

Author: bensinclair

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     timeout-minutes: 10
     strategy:
       matrix:
-        php-versions: [ '8.0', '8.1', '8.2', '8.3' ]
+        php-versions: [ '8.0', '8.1', '8.2', '8.3', '8.4' ]
     name: PHP ${{ matrix.php-versions }}
 
     steps: