test: make x509 crypto tests work with BoringSSL

[codebytere]

As in title. Tweaks a few checks parallel/test-crypto-x509.js in so they work with BoringSSL

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.49%. Comparing base (1d01ad6) to head (12e14d8).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #55927      +/-   ##
==========================================
+ Coverage   88.01%   88.49%   +0.48%     
==========================================
  Files         653      653              
  Lines      187735   187728       -7     
  Branches    35874    36183     +309     
==========================================
+ Hits       165229   166137     +908     
+ Misses      15693    14818     -875     
+ Partials     6813     6773      -40     

see 100 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63638/

[LiviaMedeiros]

Regexp without boundaries would allow extraneous symbols before or after the hex value.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63640/