Update to upstream

Fix nil handling issue with embedded pointer structs

Resolve embedded struct pointers

Sync to upstream master with changes

Sync to upstream master with changes

Allow deprecated directive on arguments (graph-gophers#541)

Refactor trace package (graph-gophers#513)

Remove dependency for graphql-go on OpenTracing and OpenTelemetry except
 where those tracers are explicitly configured for use.

Sync to upstream master with changes

validation: fix bug in maxDepth fragment spread logic (graph-gophers#492

)

Accepting value Json in parameter of request's body in custom Scalar (g…

…raph-gophers#467)

Accept JSON value in resolver args