vhost-user-backend: Prepare for new release v0.20.0

This release upgraded virtio-queue and virtio-bindings to latest
released version.

Signed-off-by: Jinank Jain <[email protected]>

Author: jinankjain

vhost-user-backend/CHANGELOG.md

@@ -7,6 +7,11 @@
 ### Deprecated
 ### Fixed
 
+## v0.20.0
+
+### Changed
+- [[306]](https://github.com/rust-vmm/vhost/pull/306) Updated virtio-queue to v0.16.0 and virtio-bindings to v0.2.6
+
 ## v0.19.0
 
 ### Changed

vhost-user-backend/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "vhost-user-backend"
-version = "0.19.0"
+version = "0.20.0"
 authors = ["The Cloud Hypervisor Authors"]
 keywords = ["vhost-user", "virtio"]
 description = "A framework to build vhost-user backend service daemon"