chore: 🤖 bump CLI version and specify release in readme

ui/desktop/CHANGELOG.md

@@ -2,11 +2,11 @@
 
 Canonical reference for changes, improvements, and bugfixes for Boundary Desktop.
 
-## Next
+## v1.2.0 [CLI 0.4.0] (2021.06.29)
 
 ### New
 
-- Add vault credential support. ([PR](https://github.com/hashicorp/boundary-ui/pull/619))
+- Add Vault credential support. ([PR](https://github.com/hashicorp/boundary-ui/pull/619))
 
 ## v1.1.0 [CLI 0.3.0] (2021.06.09)
 

ui/desktop/electron-app/config/cli.js

@@ -5,7 +5,7 @@ const https = require('https');
 const decompress = require('decompress');
 const { isMac, isWindows } = require('../src/helpers/platform.js');
 
-const artifactVersion = '0.3.0';
+const artifactVersion = '0.4.0';
 const artifactDestination = path.resolve(__dirname, '..', 'cli');
 
 const downloadArtifact = (version) => {