fix(gatsby): correct tracing for GraphQL queries (#28415) (#28475)

(cherry picked from commit 4e50d5c)

Co-authored-by: Vladimir Razuvaev <[email protected]>

Author: GatsbyJS Bot

packages/gatsby/src/query/graphql-runner.ts

@@ -184,7 +184,7 @@ export class GraphQLRunner {
 
     try {
       // `execute` will return a promise
-      return execute({
+      return await execute({
         schema,
         document,
         rootValue: context,