👽 Update mail_all.pot

Done by forked MQT: https://github.com/it-projects-llc/maintainer-quality-tools/

mail_all/i18n/mail_all.pot

@@ -50,7 +50,7 @@ msgstr ""
 
 #. module: mail_all
 #. openerp-web
-#: code:addons/mail_all/static/src/xml/menu.xml:20
+#: code:addons/mail_all/static/src/xml/menu.xml:18
 #, python-format
 msgid "No messages"
 msgstr ""