Prepare release 1.82.0 (#656)

# Description
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## Checklist
(For exoscale contributors)

* [x] Changelog updated (under *Unreleased* block)
* [ ] Testing

## Testing

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CHANGELOG.md

@@ -1,8 +1,11 @@
 # Changelog
-## Unreleased
+## 1.82.0
+
+### Features
+- dbaas: added commands for managing service users #654
+
 ### Bug fixes
 - config: fixing bug sosEndpoint lost after user switch account #652
-- dbaas: added commands for managing service users #654
 
 ## 1.81.0