ci: add markdown-link-check ignore patterns

[MikeMcC399]

Description

In .github/workflows/markdown-link-check.yml

• Update markdown-link-check to 3.14.2

In markdown_link_check_config.json

• Add ignorePatterns for
  • https://musl.libc.org/
  • https://www.etalabs.net/

Motivation and Context

The workflow .github/workflows/markdown-link-check.yml is sporadically failing with Status 0 errors:

  [✖] https://musl.libc.org/ → Status: 0
  ERROR: 2 dead links found in ./README.md !
  [✖] https://www.etalabs.net/compare_libcs.html → Status: 0

See workflow logs

This is although the following manually executed commands are succeeding:

curl -I https://musl.libc.org/
curl -I https://www.etalabs.net/compare_libcs.html

Testing Details

On Ubuntu 24.04.4 LTS, with Node.js 24.14.1 LTS

npm install markdown-link-check@3.14.2 -g
find . -name "*.md"  ! -path "./.git/*" | xargs -n 1 markdown-link-check -c markdown_link_check_config.json

No dead links should be reported.

Also tested in GitHub Actions https://github.com/MikeMcC399/docker-node/actions/workflows/markdown-link-check.yml

Example Output(if appropriate)

Types of changes

• Documentation
• Version change (Update, remove or add more Node.js versions)
• Variant change (Update, remove or add more variants, or versions of variants)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other (none of the above)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING.md document.
• All new and existing tests passed.