Run CI on PHP 8.4 and 8.4

Author: glaubinix

.github/workflows/ci.yaml

@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: [7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2]
+                php: [7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2, 8.3, 8.4]
         steps:
             - uses: actions/checkout@v2
             - name: Install PHP ${{ matrix.php }}