Update changelog

Signed-off-by: Marc Lopez <[email protected]>

Author: marclop

.changelog/329.txt

@@ -1,5 +1,7 @@
 # 0.2.2 (Unreleased)
 
+# 0.2.1 (Jun 17, 2021)
+
 BUG FIXES:
 
 * resource/ec_deployment: Fixes a bug which made ec_deployment version upgrades return an API error stating: `node_roles must be provided for all elasticsearch topology elements or for none of them`. ([#329](https://github.com/elastic/terraform-provider-ec/issues/329))