Update CHANGELOG

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+- Add support for [serde_cbor](https://crates.io/crates/serde_cbor). [#619](https://github.com/async-graphql/async-graphql/pull/619)
+
 ## [2.9.13] 2021-09-01
 
 - Released [`Axum`](https://github.com/tokio-rs/axum) integration. [`async-graphql-axum`](https://crates.io/crates/async-graphql-axum)

src/http/mod.rs

@@ -53,10 +53,6 @@ pub async fn receive_batch_body(
             receive_batch_cbor(body).await
         }
 
-        (mime::OCTET_STREAM, _) | (mime::APPLICATION, mime::OCTET_STREAM) => {
-            receive_batch_cbor(body).await
-        }
-
         // try to use multipart
         (mime::MULTIPART, _) => {
             if let Some(boundary) = content_type.get_param("boundary") {