update phase banner

We are now moving to Beta, this updates our banner
with the new phase and new copy needed.

lib/engines/content_block_manager/app/views/shared/_phase_banner.html.erb

@@ -1,13 +1,13 @@
 <%= render "govuk_publishing_components/components/phase_banner", {
-    phase: "Alpha",
-    message: sanitize("This is a new service - your
+    phase: "Beta",
+    message: sanitize("For support, to delete a content block or to give feedback, email
         #{
       mail_to(
-        "govuk-publishing-content-modelling-team@digital.cabinet-office.gov.uk",
-        "feedback",
+        "feedback-[email protected]",
+        "feedback[email protected]",
         {
           class: "govuk-link",
         },
         )
-    } will help us to improve it.", attributes: %w(class href)),
+    }.", attributes: %w(class href)),
   } %>

lib/engines/content_block_manager/features/step_definitions/content_block_manager_steps.rb

@@ -455,8 +455,8 @@
 end
 
 And("I should see the object store's phase banner") do
-  expect(page).to have_selector(".govuk-tag", text: "Alpha")
-  expect(page).to have_link("feedback", href: "mailto:govuk-publishing-content-modelling-team@digital.cabinet-office.gov.uk")
+  expect(page).to have_selector(".govuk-tag", text: "Beta")
+  expect(page).to have_link("feedback[email protected]", href: "mailto:feedback-[email protected]")
 end
 
 Then(/^I should still see the live edition on the homepage$/) do