feat(vuln): add ALT Linux support

[Alex619829]

Description

This PR adds ALT Llinux distribution support to trivy.

Checklist

• [*] I've read the guidelines for contributing to this repository.
• [*] I've followed the conventions in the PR title.
• [*] I've added tests that prove my fix is effective or that my feature works.
• [*] I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[CLAassistant]

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