build(deps): bump github.com/go-openapi/testify/v2

Bumps the go-openapi-dependencies group with 1 update: [github.com/go-openapi/testify/v2](https://github.com/go-openapi/testify).


Updates `github.com/go-openapi/testify/v2` from 2.1.1 to 2.1.8
- [Release notes](https://github.com/go-openapi/testify/releases)
- [Commits](go-openapi/testify@v2.1.1...v2.1.8)

---
updated-dependencies:
- dependency-name: github.com/go-openapi/testify/v2
  dependency-version: 2.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: go-openapi-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/go-openapi/jsonreference
 
 require (
 	github.com/go-openapi/jsonpointer v0.22.4
-	github.com/go-openapi/testify/v2 v2.1.1
+	github.com/go-openapi/testify/v2 v2.1.8
 )
 
 require github.com/go-openapi/swag/jsonname v0.25.4 // indirect

go.sum

@@ -2,5 +2,5 @@ github.com/go-openapi/jsonpointer v0.22.4 h1:dZtK82WlNpVLDW2jlA1YCiVJFVqkED1MegO
 github.com/go-openapi/jsonpointer v0.22.4/go.mod h1:elX9+UgznpFhgBuaMQ7iu4lvvX1nvNsesQ3oxmYTw80=
 github.com/go-openapi/swag/jsonname v0.25.4 h1:bZH0+MsS03MbnwBXYhuTttMOqk+5KcQ9869Vye1bNHI=
 github.com/go-openapi/swag/jsonname v0.25.4/go.mod h1:GPVEk9CWVhNvWhZgrnvRA6utbAltopbKwDu8mXNUMag=
-github.com/go-openapi/testify/v2 v2.1.1 h1:n7+Qj8cpHTFYD8V9v6Uf+y9KoTxaAHx15Qw7Fn00bJ0=
-github.com/go-openapi/testify/v2 v2.1.1/go.mod h1:HCPmvFFnheKK2BuwSA0TbbdxJ3I16pjwMkYkP4Ywn54=
+github.com/go-openapi/testify/v2 v2.1.8 h1:Ctu3hazcJy+DzbCPKjA5S5JW86UFY9PZ2LAfuMp3Ru8=
+github.com/go-openapi/testify/v2 v2.1.8/go.mod h1:HCPmvFFnheKK2BuwSA0TbbdxJ3I16pjwMkYkP4Ywn54=