chore(deps): bump github.com/99designs/gqlgen from 0.17.26 to 0.17.27

Bumps [github.com/99designs/gqlgen](https://github.com/99designs/gqlgen) from 0.17.26 to 0.17.27.
- [Release notes](https://github.com/99designs/gqlgen/releases)
- [Changelog](https://github.com/99designs/gqlgen/blob/master/CHANGELOG.md)
- [Commits](https://github.com/99designs/gqlgen/compare/v0.17.26...v0.17.27)

graph/model/models_gen.go

@@ -13,16 +13,16 @@ type Supergraph interface {
 type InputSubGraph struct {
 	Ref     string  `json:"ref"`
 	Service string  `json:"service"`
-	URL     *string `json:"url"`
-	WsURL   *string `json:"wsUrl"`
+	URL     *string `json:"url,omitempty"`
+	WsURL   *string `json:"wsUrl,omitempty"`
 	Sdl     string  `json:"sdl"`
 }
 
 type SubGraph struct {
 	ID        string    `json:"id"`
 	Service   string    `json:"service"`
-	URL       *string   `json:"url"`
-	WsURL     *string   `json:"wsUrl"`
+	URL       *string   `json:"url,omitempty"`
+	WsURL     *string   `json:"wsUrl,omitempty"`
 	Sdl       string    `json:"sdl"`
 	ChangedBy string    `json:"changedBy"`
 	ChangedAt time.Time `json:"changedAt"`