fix(deps): update module golang.org/x/oauth2 to v0.15.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
golang.org/x/oauth2	require	minor	v0.14.0 -> v0.15.0

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (ba51ac6) 64.36% compared to head (0299330) 64.36%.

:exclamation: Current head 0299330 differs from pull request most recent head 0f5bc91. Consider uploading reports for the commit 0f5bc91 to get more accurate results

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #91 +/- ## ======================================= Coverage 64.36% 64.36% ======================================= Files 21 21 Lines 1103 1103 ======================================= Hits 710 710 Misses 209 209 Partials 184 184 ```

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