fix: signal has no attribute SIGALRM on Windows

[balihb]

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Description

Helm fails on Windows with: module 'signal' has no attribute 'SIGALRM'

Fixes #3733

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my feature, policy, or fix is effective and works
• [ ] New and existing tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[balihb]

It fixes the crash, but swallows after that in the background _get_target_dir leaves the drive letter in the path and it fails to create the file to scan.

[stale[bot]]

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[stale[bot]]

Closing issue due to inactivity. If you feel this is in error, please re-open, or reach out to the community via slack: https://slack.bridgecrew.io Thanks!