Prepare for release 2.3.12

[ilyasfoo]

Changes proposed in this Pull Request:

Preparation for release of 2.3.12

Changelog

= 2.3.12 =
* Update DataSourcePoller import since after refactor in core #1450
* Force launch-your-store feature flag to false #1450

[github-actions]

Size Change: 0 B

Total Size: 197 kB

ℹ️ View Unchanged

Filename	Size
./build/53.js	1.05 kB
./build/index.css	883 B
./build/index.js	122 kB
./build/marketing.js	58 kB
./build/payment-gateway-suggestions.css	1.25 kB
./build/payment-gateway-suggestions.js	6.46 kB
./build/plugins.js	3.92 kB
./build/style-index.css	2.15 kB
./build/style-marketing.css	805 B

_{compressed-size-action}

[chihsuan]

We also need to update the versions of these files:

• includes/notes/data/class-wc-calypso-bridge-admin-note-data-store.php
• includes/class-wc-calypso-bridge-woocommerce-admin-features.php

[chihsuan]

Updated in 549b9d5.

LGTM!