Bump golang.org/x/oauth2 from 0.19.0 to 0.20.0

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.19.0 to 0.20.0.
- [Commits](golang/oauth2@v0.19.0...v0.20.0)

---
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>

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/go-openapi/swag v0.22.9
 	github.com/go-openapi/validate v0.23.1
 	github.com/sirupsen/logrus v1.9.3
-	golang.org/x/oauth2 v0.19.0
+	golang.org/x/oauth2 v0.20.0
 )
 
 require (