Updates from bedrock (#429)

From file changes in mozilla/bedrock@4e1faf1

en/footer-refresh.ftl

@@ -2,7 +2,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-footer-refresh-find-out-about = Find out about { -brand-name-mozilla } products, initiatives, and more. We’ll never sell your email, even if presented with free pizza for life.
+footer-refresh-get-the-best = Get the best { -brand-name-firefox } tips, tricks and updates. We promise to keep your email private and secure — just the best of { -brand-name-firefox } sent straight to your inbox.
 footer-refresh-leadership = Leadership
 footer-refresh-advertise = Advertise with { -brand-name-mozilla }
 footer-refresh-firefox-release-notes = { -brand-name-firefox } Release Notes