Bump x/oauth to 0.27.0

[fxiang1]

• I have taken backward compatibility into consideration.

Fix CVE-2025-22868

[openshift-ci]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.88%. Comparing base (1c7c4c9) to head (abf146c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #432      +/-   ##
==========================================
- Coverage   55.97%   55.88%   -0.10%     
==========================================
  Files          96       96              
  Lines       15760    15760              
==========================================
- Hits         8822     8807      -15     
- Misses       6048     6063      +15     
  Partials      890      890              

Flag	Coverage Δ
unit	55.88% <ø> (-0.10%)	⬇️

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[fxiang1]

/assign @rokej

[rokej]

/lgtm