Maintenance release
- Adapt code to Qt6. PR #1518 from @srcejon
- Rotator controller: Fix initialisation of serial port. PR #1520 from @srcejon
- qo100_datv.py: device dependent log2 decimation
- Feature plugins: Make settings assignments atomic. Part of #1329
- KiwiSDR: implement variable sample rate. Fixes #1523
Note: due to a recent change in the MSVC version (1933 to 1934) in the Github CI/CD the build chain on Windows fails unexpectedly. Therefore no binaries artifacts are provided for Windows.