fix: temporary directory for .gz files

[SanderVocke]

Description

See #98. Not sure about other use-cases, but on Linux when trying to upload a .sym file, symbol-upload tries to write into a temporary subdirectory which doesn't exist and therefore the upload fails.

This is a straightforward fix.

Fixes #98.

Feel free to implement this in another way if this does not capture the intent. If any unit tests/documentation if needed I'd rather leave that up to you.

Checklist

• [x] Tested manually
• [x] Unit tests pass with no errors or warnings
• [x] Documentation updated (if applicable)
• [x] Reviewed by at least 1 other contributor

[bobbyg603]

Hi @SanderVocke 👋,

Thank you for opening a PR - I've taken a quick look at this, and everything looks great! I want to test it on one of our systems, but assuming that goes well, we should have this merged shortly.

[bobbyg603]

Thanks for the contribution @SanderVocke! 🚀