update changelog and bump version

CHANGELOG.md

@@ -5,6 +5,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [5.0.3 and 5.0.4] 2023-01-12
+- update dependencies
+
 ## [5.0.2] 2022-03-04
 - merged [#28](https://github.com/berkowski/mio-serial/pull/28)
 - update dependencies

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mio-serial"
-version = "5.0.3"
+version = "5.0.4"
 authors = ["Zac Berkowitz <[email protected]>"]
 description = "A serial port implementation for mio"
 license = "MIT"
@@ -31,7 +31,7 @@ default-features = false
 version = "0.4"
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.25"
+nix = "0.26"
 
 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = [
@@ -42,7 +42,7 @@ winapi = { version = "0.3", features = [
 ] }
 
 [dev-dependencies.env_logger]
-version = "0.9"
+version = "0.10"
 
 [[example]]
 name = "read_serialport"