Test on PHGP 8.3 and 8.4

Author: frankdejonge

.github/workflows/quality-assurance.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: [ '7.4', '8.0', '8.1', '8.2' ]
+        php: [ '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
         composer-flags: [ '' ]
         upgrade-aws-sdk: [ 'no' ]
         phpunit-flags: [ '--coverage-text' ]