Bump examples/* dependencies to fix vulnerabilities (#184)

* Bump github.com/graph-gophers/graphql-go in /examples/auth
* Also bump other deps in examples/ to their latest versions.

Bumps [github.com/graph-gophers/graphql-go](https://github.com/graph-gophers/graphql-go) from 0.0.0-20190108123631-d5b7dc6be53b to 1.3.0.
- [Release notes](https://github.com/graph-gophers/graphql-go/releases)
- [Commits](https://github.com/graph-gophers/graphql-go/commits/v1.3.0)

---
updated-dependencies:
- dependency-name: github.com/graph-gophers/graphql-go
  dependency-type: direct:production
...

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

* Upgrade all examples/auth deps

* Upgrade examples/fileupload gateway dep

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: John Starich <johnstarich@johnstarich.com>

Author: dependabot[bot]

examples/auth/go.mod

@@ -1,10 +1,10 @@
 module github.com/nautilus/gateway/examples/auth
 
 require (
-	github.com/graph-gophers/graphql-go v0.0.0-20190108123631-d5b7dc6be53b
-	github.com/nautilus/gateway v0.1.4
-	github.com/nautilus/graphql v0.0.9
-	github.com/vektah/gqlparser v1.1.0
+	github.com/graph-gophers/graphql-go v1.5.0
+	github.com/nautilus/gateway v0.3.8
+	github.com/nautilus/graphql v0.0.20
+	github.com/vektah/gqlparser/v2 v2.4.8
 )
 
 go 1.13