ci: Add 6.11

Author: iamsergio

.github/workflows/build-qt6.yml

@@ -26,7 +26,7 @@ jobs:
           - macos-latest
         qt_version:
           - "6.5.*"
-          - "6.10.1" # bump to latest Qt freely
+          - "6.11.0" # bump to latest Qt freely
         preset:
           - name: ci-dev-client-only
             tests_with: qt6