Add Octopus Newsletter Form (#445)

* Newsletter Updates

* Update layouts/shortcodes/subscribe.html

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Fixes

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Lukas Wallrich <lukas.wallrich@gmail.com>

Author: 3 people

layouts/shortcodes/subscribe.html

@@ -1,26 +1,4 @@
-<div id="mc_embed_shell">
-      <link href="//cdn-images.mailchimp.com/embedcode/classic-061523.css" rel="stylesheet" type="text/css">
-  <style type="text/css">
-        #mc_embed_signup{background:#fff; clear:left; font:16px Helvetica,Arial,sans-serif;}
-        /* Add your own Mailchimp form style overrides in your site stylesheet or in this style block.
-           We recommend moving this block and the preceding CSS link to the HEAD of your HTML file. */
-</style>
-<div id="mc_embed_signup">
-    <form action="https://forrt.us14.list-manage.com/subscribe/post?u=64c29a25a0ca81454399d522e&amp;id=478fd83dc4&amp;f_id=00d3b7e5f0" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank">
-        <div id="mc_embed_signup_scroll">
-            <div class="indicates-required"><span class="asterisk">*</span> indicates required</div>
-            <div class="mc-field-group"><label for="mce-EMAIL">Email Address <span class="asterisk">*</span></label><input type="email" name="EMAIL" class="required email" id="mce-EMAIL" required="" value=""></div>
-        <div id="mce-responses" class="clear">
-            <div class="response" id="mce-error-response" style="display: none;"></div>
-            <div class="response" id="mce-success-response" style="display: none;"></div>
-        </div>
-        <div aria-hidden="true" style="position: absolute; left: -5000px;">
-            <input type="text" name="b_64c29a25a0ca81454399d522e_478fd83dc4" tabindex="-1" value="">
-        </div>
-        <div class="clear">
-            <input type="submit" name="subscribe" id="mc-embedded-subscribe" class="button" value="Subscribe">
-        </div>
-    </div>
-</form>
-</div>
-<script type="text/javascript" src="//s3.amazonaws.com/downloads.mailchimp.com/js/mc-validate.js"></script><script type="text/javascript">(function($) {window.fnames = new Array(); window.ftypes = new Array();fnames[0]='EMAIL';ftypes[0]='email';fnames[1]='FNAME';ftypes[1]='text';fnames[2]='LNAME';ftypes[2]='text';fnames[3]='ADDRESS';ftypes[3]='address';fnames[4]='PHONE';ftypes[4]='phone';fnames[5]='BIRTHDAY';ftypes[5]='birthday';}(jQuery));var $mcj = jQuery.noConflict(true);</script></div>
+    <!-- EmailOctopus Newsletter Form -->
+<div id="octopus-form-5fb3cb44-8c81-11f0-9781-f7fc195374ed">
+    <script async src="https://eocampaign1.com/form/5fb3cb44-8c81-11f0-9781-f7fc195374ed.js" data-form="5fb3cb44-8c81-11f0-9781-f7fc195374ed"></script>
+</div>