Plugin is incompatible with latest QGIS version

[JakobRogstadius]

When trying to install the QGIS Cloud plugin with the latest QGIS version (3.44.2, on Windows), the following error occurs:

"The plugin is not compatible with this version of QGIS.
It's designed for QGIS versions: Plugin does not support Qt6 versions of QGIS."

[tpo]

Cc: @Stromschlag6

-> sourcepole/qgis-instantprint-plugin#40

[hdus]

We have migrated to master to QGIS Qt6. Please give it a try and report any issues.