support macos pkg files for testflight uploads

[martinh2011]

Task name: AppStoreRelease

Description: Added support for Testflight uploads for macOS pkg files as Apple is now offering Testflight for macOS, too

Documentation changes required: Y

Added unit tests: Y (added test case for fastlane version check. Testflight for macOS requires 2.193.1 or newer)

Attached related issue:

Checklist:

• [x] Task version was bumped - please check instruction how to do it
• [x] Checked that applied changes work as expected

[ghost]

All CLA requirements met.

[jordanvector]

Is there any sort of timeframe when this fix will be merged in? We have been waiting for this for sometime now.

[jeromelaban]

As Catalyst is picking up steam, it would be very welcome for this PR or similar to be merged so we can push apps to testflight. Thanks!

[anatolybolshakov]

@martinh2011 thanks for contribution! Could you please take a look at the comments here?

[kevcrooks]

Is there an estimate on when this can be merged and available for use in our DevOps releases?

[vmapetr]

The fix was merged in the master in this PR and will be available with the next release, so I will close this PR. Thanks!