Fix KERNEL_INFO_RE

[dezza]

Polyphony fails to build if uname -sr is not formed a certain way

Current regex requires:

• 3 digits
• word at the end

Other samples I found:

• Linux 5.10.60.1-microsoft-standard-WSL2 (Windows Subsystem for Linux), includes - in word.
• Linux 5.10.63+ (raspbian), no word present

I propose: Linux (\d)\.(\d+)(?:\.)?((?:\d+\.?)*)(?:\-)?([\w\-]+)?

Which will match on: Linux 5.10.63.62.63, infinite patch numbers Linux 5.10.60.1-microsoft-standard-WSL2, word at the end including -

Test: https://regex101.com/r/CLX00x/1

[noteflakes]

Out of curiosity, why did you close the PR? This seems like a valuable change. Nevermind, I now see your other PR #89.