chore(release): 5.21.0 [skip ci]

# [5.21.0](seamapi/javascript@v5.20.1...v5.21.0) (2023-05-12)

### Features

* Use PUT /client_sessions/create ([#198](seamapi/javascript#198)) ([eccc975](seamapi/javascript@eccc975))

Author: semantic-release-bot

package.json

@@ -7,7 +7,7 @@
     "iot",
     "device"
   ],
-  "version": "5.20.1",
+  "version": "5.21.0",
   "license": "MIT",
   "sideEffects": false,
   "main": "./cjs-wrapper.js",