Replace the deprecated @react-email/components dependency (and its
deprecated sub-packages) with the unified react-email package per the
React Email 6 migration, updating all component and render imports across
the email templates from "@react-email/components" to "react-email".
This removes the npm deprecation warnings emitted by the old
@react-email/* packages while keeping the template build output
unchanged.
Signed-off-by: Sacha Al Himdani <sacha@probo.com>