test(wpt): use the wpt submodule's test certificates

[kjsik11]

This relates to...

Rationale

WPT test cert file expired now so all local WPT test fails in https, wss cases

$ git show main:test/web-platform-tests/runner/certs/web-platform.test.pem | openssl x509 -noout -enddate -checkend 0
notAfter=Aug 29 20:32:30 2026 GMT
Certificate will expire

Changes

• runner/config.json — ssl.pregenerated paths → tools/certs/*
• wpt-runner.mjs — update CA_CERT_PATH, path to valid cert files
• remove expired cert files on runner/certs/

Features

Bug Fixes

• remove expired cert files + change path to valid cert files

Breaking Changes and Deprecations

Verification

$ node test/web-platform-tests/wpt-runner.mjs run /fetch/metadata/fetch.https.sub.any.html

0 passing / 6 failing on main; 18 passing / 12 failing with this pr

Full suite (/fetch /mimesniff /websockets /serviceWorkers /eventsource, 1040 files), Node.js 24:

	passing	failing
CI on #5732, 7h before expiry (log)	4810	4031
CI on #5740, 23h after expiry (log)	4649	4147
with this change	4810	4031

Last row ran in local cli(Node 24.20.0)

assisted by claude code

Status

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

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.45%. Comparing base (fc3450d) to head (fdc35ed).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5739      +/-   ##
==========================================
- Coverage   93.47%   93.45%   -0.02%     
==========================================
  Files         110      110              
  Lines       38908    38908              
==========================================
- Hits        36368    36362       -6     
- Misses       2540     2546       +6     

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