chore: release 1.2.1 (#199)
chore: release 1.2.1 (#199)

* updated CHANGELOG.md

* updated package.json

* updated samples/package.json

GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples,GoogleCloudPlatform/nodejs-docs-samples