Fix for snap build

[raivisdejus]

Created a custom version of CTranslate2 wheel that has libctranslate2.so with stripped execstack flags. Local validation of the snap passes and it works as with the default CTranslate2 wheel file. Build notes of the custom CTranslate wheel are here. https://github.com/raivisdejus/CTranslate2-no-execstack/

For snap build to fit GitHub actions environment limits I am switching to CPU torch in the snap. That is a version that will work for every user, for users with GPUs will attempt to install GPU specific torch in a later PR.

Also removed locales-all from snap as it is not needed and takes a lot of space in snap.

Also restoring previously disabled whisper types on Linux.

This PR also includes fix for macOS build from #751

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 34 lines in your changes are missing coverage. Please review.

Project coverage is 81.46%. Comparing base (38f5d26) to head (72e309e).
Report is 9 commits behind head on main.

❗ Current head 72e309e differs from pull request most recent head dd57e45

Please upload reports for the commit dd57e45 to get more accurate results.

Files	Patch %	Lines
buzz/file_transcriber_queue_worker.py	17.39%	19 Missing ⚠️
buzz/widgets/recording_transcriber_widget.py	22.22%	14 Missing ⚠️
buzz/widgets/transcription_task_folder_watcher.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #753      +/-   ##
==========================================
+ Coverage   81.28%   81.46%   +0.18%     
==========================================
  Files          81       83       +2     
  Lines        3617     3928     +311     
==========================================
+ Hits         2940     3200     +260     
- Misses        677      728      +51     

Flag	Coverage Δ
Windows	81.17% <44.61%> (-0.12%)	⬇️
macOS	81.16% <50.00%> (?)

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[raivisdejus]

Will merge cleaned up version of this PR via #757