MM-44420 - replace 14-day references with new freemium 30-day (#20349)

Co-authored-by: Pablo Velez Vidal <pablo.velez@mattermost.com>

app/email/email_test.go

@@ -252,7 +252,7 @@ func TestSendCloudTrialEndedEmail(t *testing.T) {
 			require.Contains(t, resultsMailbox[0].To[0], emailTo, "Wrong To: recipient")
 			resultsEmail, err := mail.GetMessageFromMailbox(emailTo, resultsMailbox[0].ID)
 			require.NoError(t, err, "Could not get message from mailbox")
-			require.Contains(t, resultsEmail.Body.Text, "Your free 14-day trial of Mattermost has ended", "Wrong received message %s", resultsEmail.Body.Text)
+			require.Contains(t, resultsEmail.Body.Text, "Your free 30-day trial of Mattermost has ended", "Wrong received message %s", resultsEmail.Body.Text)
 		}
 		mail.DeleteMailBox(emailTo)
 

i18n/en.json

@@ -3137,11 +3137,11 @@
   },
   {
     "id": "api.templates.cloud_trial_ended_email.subtitle",
-    "translation": "{{.Name}}, your 14-day free trial of Mattermost Cloud Enterprise ended on {{.TodayDate}}. We hope you’ve enjoyed our flexible and secure collaboration platform. Please add your payment information to ensure your team can continue collaborating with Mattermost."
+    "translation": "{{.Name}}, your 30-day free trial of Mattermost Cloud Enterprise ended on {{.TodayDate}}. We hope you’ve enjoyed our flexible and secure collaboration platform. Please add your payment information to ensure your team can continue collaborating with Mattermost."
   },
   {
     "id": "api.templates.cloud_trial_ended_email.title",
-    "translation": "Your free 14-day trial of Mattermost has ended"
+    "translation": "Your free 30-day trial of Mattermost has ended"
   },
   {
     "id": "api.templates.cloud_trial_ending_email.add_payment_method",
@@ -3153,11 +3153,11 @@
   },
   {
     "id": "api.templates.cloud_trial_ending_email.subtitle",
-    "translation": "{{.Name}}, your 14-day trial of Mattermost is ending in 3 days, on {{.TrialEnd}}. Please add your payment information to ensure your team can continue enjoying the benefits of Mattermost Cloud."
+    "translation": "{{.Name}}, your 30-day trial of Mattermost is ending in 3 days, on {{.TrialEnd}}. Please add your payment information to ensure your team can continue enjoying the benefits of Mattermost Cloud."
   },
   {
     "id": "api.templates.cloud_trial_ending_email.title",
-    "translation": "Your free 14-day trial of Mattermost is ending soon"
+    "translation": "Your free 30-day trial of Mattermost is ending soon"
   },
   {
     "id": "api.templates.cloud_upgrade_confirmation.subject",
@@ -3237,7 +3237,7 @@
   },
   {
     "id": "api.templates.cloud_welcome_email.title",
-    "translation": "Your 14 day trial of the {{.WorkSpace}} workspace is ready to go!"
+    "translation": "Your 30-day trial of the {{.WorkSpace}} workspace is ready to go!"
   },
   {
     "id": "api.templates.copyright",