doc: Add graphql-pino-middleware to list of middlewares

README.md

@@ -157,6 +157,7 @@ server.start(() => console.log('Server is running on localhost:4000'))
 - [graphql-middleware-sentry](https://github.com/maticzav/graphql-middleware-sentry) - Report your server errors to Sentry.
 - [graphql-middleware-forward-binding](https://github.com/maticzav/graphql-middleware-forward-binding) - GraphQL Binding forwardTo plugin for GraphQL Middleware.
 - [graphql-yup-middleware](https://github.com/JCMais/graphql-yup-middleware) - Use yup to validate mutation arguments
+- [graphql-pino-middleware](https://github.com/addityasingh/graphql-pino-middleware) - GraphQL middleware to augment resolvers with pino logger
 
 ## API