Merge pull request #6 from genkgo/php84

include php 8.4 in flow

Author: frederikbosch

.github/workflows/phpunit.yml

@@ -16,6 +16,7 @@ jobs:
         - '8.1'
         - '8.2'
         - '8.3'
+        - '8.4'
     steps:
       - uses: shivammathur/setup-php@v2
         with:
@@ -28,5 +29,5 @@ jobs:
         run: |
           echo "::add-matcher::${{ runner.tool_cache }}/php.json"
           echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
-      - run: composer install --ignore-platform-req=php+
+      - run: composer install
       - run: vendor/bin/phpunit