test on php 8.2 and php 8.3 too

Author: dannyvankooten

.github/workflows/php.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '7.3', '7.4', '8.0', '8.1' ]
+        php-versions: [ '7.3', '7.4', '8.0', '8.1', '8.2', '8.3' ]
 
     steps:
       - uses: actions/checkout@v2
@@ -36,4 +36,4 @@ jobs:
         run: composer install --prefer-dist --no-progress
 
       - name: Run test suite
-        run: composer run-script test
+        run: composer run-script test