Expose KeyPurposeId::to_decoded_oid()

[djc]

To help external ExtendedKeyUsageValidators fill RequiredEkuNotFoundContext::present.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.44%. Comparing base (b88328a) to head (7640e87).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #385   +/-   ##
=======================================
  Coverage   97.43%   97.44%           
=======================================
  Files          20       20           
  Lines        4101     4104    +3     
=======================================
+ Hits         3996     3999    +3     
  Misses        105      105           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[cpu]

IMO it'd be nice to wait for conclusive end to end confirmation this is the last bit of tweaking needed for the OP that kicked off this work before we publish another release.

[djc]

IMO it'd be nice to wait for conclusive end to end confirmation this is the last bit of tweaking needed for the OP that kicked off this work before we publish another release.

That was my plan exactly!