Update CHANGELOG

Author: crazy-max

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## 7.3.0 (2021/02/19)
+
+* Refactor CI and dev workflow with buildx bake (#161)
+  * Add `image-local` target
+  * Single job for artifacts and image
+  * Add `armv5`, `ppc64le` and `s390x` artifacts
+  * Upload artifacts
+  * Validate
+* Remove `linux/s390x` Docker platform support for now
+* Bump github.com/stretchr/testify from 1.6.1 to 1.7.0 (#154)
+  Bump github.com/alecthomas/kong from 0.2.12 to 0.2.15 (#160)
+* MkDocs Materials 6.2.8
+
 ## 7.2.0 (2020/11/29)
 
 * Allow to download files to a temp dir first (#149)