docs: match undici EoL to node version it's bundled in

[trivikr]

This relates to...

Discussion on slack https://openjs-foundation.slack.com/archives/C01QF9Q31QD/p1779820032560809

Rationale

Changes

Features

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Breaking Changes and Deprecations

Status

• I have read and agreed to the Developer's Certificate of Origin
• Tested
• Benchmarked (optional)
• Documented
• Review ready
• In review
• Merge ready

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.22%. Comparing base (f049730) to head (8b4226b).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5330   +/-   ##
=======================================
  Coverage   93.21%   93.22%           
=======================================
  Files         110      110           
  Lines       36598    36598           
=======================================
+ Hits        34115    34118    +3     
+ Misses       2483     2480    -3     

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[mcollina]

lgtm