[V3] Add support for Alpine 3.23

[sean-breen]

Proposed changes

Add support for Alpine Linux 3.23

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING document
• I have run make install-tools and have attached any dependency changes to this pull request
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• If applicable, I have updated any relevant documentation (README.md)
• If applicable, I have tested my cross-platform changes on Ubuntu 22, Redhat 8, SUSE 15 and FreeBSD 13

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.31%. Comparing base (543e7c6) to head (e2477ba).
⚠️ Report is 1 commits behind head on release-3.6.1.

Additional details and impacted files

@@              Coverage Diff               @@
##           release-3.6.1    #1441   +/-   ##
==============================================
  Coverage          85.31%   85.31%           
==============================================
  Files                102      102           
  Lines              12972    12972           
==============================================
  Hits               11067    11067           
  Misses              1418     1418           
  Partials             487      487           

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[dhurley]

Can you update the table in this Makefile as well https://github.com/nginx/agent/blob/support-alpine-3.23/Makefile#L25

[craigell]

Tested and approved. Only change required is to update the Makefile to include Alpine 3.23