add http.Client with skipverify option to oauth renew token method

cmd/drone-server/inject_login.go

@@ -92,7 +92,7 @@ func provideGiteaLogin(config config.Config) login.Middleware {
 	if config.Gitea.Server == "" {
 		return nil
 	}
-	return &gitea.Config {
+	return &gitea.Config{
 		ClientID:     config.Gitea.ClientID,
 		ClientSecret: config.Gitea.ClientSecret,
 		Server:       config.Gitea.Server,
@@ -163,13 +163,15 @@ func provideRefresher(config config.Config) *oauth2.Refresher {
 			ClientSecret: config.Bitbucket.ClientSecret,
 			Endpoint:     "https://bitbucket.org/site/oauth2/access_token",
 			Source:       oauth2.ContextTokenSource(),
+			Client:       defaultClient(config.Bitbucket.SkipVerify),
 		}
 	case config.Gitea.ClientID != "":
 		return &oauth2.Refresher{
 			ClientID:     config.Gitea.ClientID,
 			ClientSecret: config.Gitea.ClientSecret,
 			Endpoint:     config.Gitea.Server + "/login/oauth/access_token",
 			Source:       oauth2.ContextTokenSource(),
+			Client:       defaultClient(config.Gitea.SkipVerify),
 		}
 	}
 	return nil