ci: run tests against node 18

[pi0]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Node.js 16 is almost EOL. We don't plan to "force upgrade" users by deliberately breaking Node.js 16 but also not guarantee supporting things working in EOL versions of Node.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[codecov]

Codecov Report

Merging #1713 (9fc28a1) into main (6b5f1d1) will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1713      +/-   ##
==========================================
- Coverage   77.29%   77.27%   -0.03%     
==========================================
  Files          75       75              
  Lines        7893     7893              
  Branches      805      806       +1     
==========================================
- Hits         6101     6099       -2     
- Misses       1790     1792       +2     
  Partials        2        2              

see 1 file with indirect coverage changes