Bump version to 0.21.0

Author: cyqsimon

CHANGELOG.md

@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased]
 
-### Added
+## [0.21.0] - 2023-09-19
 
 ### Fixed
 * Fixed resolv.conf errors on systems with trust-ad (https://github.com/imsnif/bandwhich/pull/201) - [@JoshLambda](https://github.com/JoshLambda)

Cargo.lock

@@ -2,7 +2,7 @@
 edition = "2021"
 name = "bandwhich"
 description = "Display current network utilization by process, connection and remote IP/hostname"
-version = "0.20.0"
+version = "0.21.0"
 rust-version = "1.70.0"
 homepage = "https://github.com/imsnif/bandwhich"
 repository = "https://github.com/imsnif/bandwhich"