⬆️(mail) update mjml to v5 and @html-to/text-cli

@html-to/text-cli was containing CVEs reported by the audit.

src/mail/mjml/partial/header.mjml

@@ -1,21 +1,16 @@
 <mj-head>
     <mj-title>{{ title }}</mj-title>
-    <mj-preview>
-        <!--
-            We load django tags here, in this way there are put within the body in html output
-            so the html-to-text command includes it within its output
-        -->
-        {% load i18n static extra_tags %}
-        {{ title }}
-    </mj-preview>
+    <mj-preview>{{ title }}</mj-preview>
+    <mj-font name="Roboto" href="https://fonts.bunny.net/css?family=roboto:400,700,900" />
     <mj-attributes>
-        <mj-font name="Roboto" href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;700;900&display=swap" />
         <mj-all
                 font-family="Roboto, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif"
                 font-size="16px"
                 line-height="1.5em"
                 color="#3A3A3A"
         />
+        <mj-text font-family="Roboto, sans-serif" />
+        <mj-button font-family="Roboto, sans-serif" />
     </mj-attributes>
     <mj-style>
         /* Reset */