Add PHP 8.4 to the CI

Author: nicolas-grekas

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ jobs:
     strategy:
       matrix:
         php:
+          - 8.4
           - 8.3
           - 8.2
           - 8.1
@@ -26,6 +27,8 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: xdebug
           ini-file: development
+      - run: composer config minimum-stability dev
+        if: ${{ matrix.php >= 8.4 }}
       - run: composer install
       - run: vendor/bin/phpunit --coverage-text
         if: ${{ matrix.php >= 7.3 }}