Merge pull request #49 from elsbrock/renovate/golang.org-x-oauth2-0.x

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

Author: elsbrock

go.mod

@@ -6,6 +6,6 @@ require (
 	github.com/google/go-github/v32 v32.1.0
 	github.com/google/go-github/v57 v57.0.0
 	github.com/google/go-querystring v1.1.0 // indirect
-	golang.org/x/oauth2 v0.5.0
+	golang.org/x/oauth2 v0.15.0
 	google.golang.org/appengine v1.6.7 // indirect
 )