mod: do: bump golang.org/x/oauth2 from 0.5.0 to 0.10.0

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.5.0 to 0.10.0.
- [Commits](https://github.com/golang/oauth2/compare/v0.5.0...v0.10.0)

---
updated-dependencies:
- dependency-name: golang.org/x/oauth2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/vendor/github.com/google/s2a-go/CONTRIBUTING.md b/vendor/github.com/google/s2a-go/CONTRIBUTING.md
new file mode 100644
index 000000000..22b241cb7
--- /dev/null
+++ b/vendor/github.com/google/s2a-go/CONTRIBUTING.md
@@ -0,0 +1,29 @@
+# How to Contribute
+
+We'd love to accept your patches and contributions to this project. There are
+just a few small guidelines you need to follow.
+
+## Contributor License Agreement
+
+Contributions to this project must be accompanied by a Contributor License
+Agreement (CLA). You (or your employer) retain the copyright to your
+contribution; this simply gives us permission to use and redistribute your
+contributions as part of the project. Head over to
+<https://cla.developers.google.com/> to see your current agreements on file or
+to sign a new one.
+
+You generally only need to submit a CLA once, so if you've already submitted one
+(even if it was for a different project), you probably don't need to do it
+again.
+
+## Code reviews
+
+All submissions, including submissions by project members, require review. We
+use GitHub pull requests for this purpose. Consult
+[GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
+information on using pull requests.
+
+## Community Guidelines
+
+This project follows
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).