There is an updated pull request by classabbyamp against master on the void-packages repository

https://github.com/classabbyamp/void-packages ci/xlint-nonfatal
https://github.com/void-linux/void-packages/pull/44930

common/travis/xlint: make xlint only fatal for new templates
per discussion on irc, to help updates and other changes go more smoothly, xlint should only cause a CI failure if the linted template is new.

examples:
- succeeds because only a changed template errors: https://github.com/void-linux/void-packages/actions/runs/5496798220/jobs/10017025380
- fails because of a new package with errors: https://github.com/void-linux/void-packages/actions/runs/5496783595/jobs/10017001341

this does not affect the *reporting* of lint issues, those are still produced as annotations on the 'files changed' tab.

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#### Testing the changes
- I tested the changes in this PR: **YES**



A patch file from https://github.com/void-linux/void-packages/pull/44930.patch is attached