Security fix: Backport security fixes from WC 3.5.7

[timbocode]

All Submissions:

• Have you followed the Classic Commerce Contributing guideline?
• Does your code follow the repo standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Backport security fixes from woocommerce/woocommerce@3.5.6...3.5.7

WC Commit IDs

woocommerce/woocommerce@b626945
woocommerce/woocommerce@a2dee22
woocommerce/woocommerce@0a10883
woocommerce/woocommerce@039915f

Files changed

assets/js/admin/meta-boxes-order.js
assets/js/admin/meta-boxes-order.min.js
assets/js/frontend/country-select.js
assets/js/frontend/country-select.min.js

See also #214

[timbocode]

Testing

• Checked operation of elements using States select box.

[bahiirwa]

Testing

* Checked operation of elements using States select box.

Similar test done for a fresh install of plugin using the Wizard and alos choosing location via the checkout pages. Country and state selection is all operational nothing broken.