shared-credentials: Add vistaprint.ca => account.vistaprint.com (#514)
shared-credentials: Add vistaprint.ca => account.vistaprint.com (#514)

A new vistaprint.ca was launched which now handles authentication via account.vistaprint.com. Other regional sites I checked were (including vistaprint.com) were still serving login on their own domain at `/vp/ns/sign_in.aspx`.

https://www.vistaprint.ca/hub/change-is-here-and-its-good/
apple/password-manager-resources,apple/password-manager-resources,apple/password-manager-resources