Bump version (#782)

Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: api-clients-generation-pipeline[bot]

package.json

@@ -110,5 +110,5 @@
   "engines": {
     "node": ">=12.0.0"
   },
-  "version": "1.2.0"
+  "version": "1.2.1-beta.0"
 }