community/magic-wormhole-rs: upgrade to 0.7.5 and move from testing

This has been in testing for a while and seems like a mature enough project.

added 692 commits

• 255d5564...68a9726a - 691 commits from branch alpine:master
• 2490aa50 - community/magic-wormhole-rs: upgrade to 0.7.5 and move from testing

Compare with previous version

merged