Update module golang.org/x/oauth2 to v0.26.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
golang.org/x/oauth2	v0.25.0 -> v0.26.0

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 16.28%. Comparing base (130918b) to head (56532da).
Report is 1 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1854   +/-   ##
=======================================
  Coverage   16.28%   16.28%           
=======================================
  Files          76       76           
  Lines        4268     4268           
=======================================
  Hits          695      695           
  Misses       3503     3503           
  Partials       70       70           

Flag	Coverage Δ
backend	16.28% <ø> (ø)

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