fix(deps): update module golang.org/x/oauth2 to v0.18.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
golang.org/x/oauth2	v0.17.0 -> v0.18.0

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.83%. Comparing base (a80575a) to head (6ac65d9).

❗ Current head 6ac65d9 differs from pull request most recent head 8f04fbe. Consider uploading reports for the commit 8f04fbe to get more accurate results

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #283   +/-   ##
=======================================
  Coverage   73.83%   73.83%           
=======================================
  Files          57       57           
  Lines        3275     3275           
=======================================
  Hits         2418     2418           
  Misses        538      538           
  Partials      319      319           

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