Disable cookie consent pop-up in non-production environments (#21242)

* Disable cookie consent pop-up in non-production environments

* changed to jekyll env check in conditional

Author: bsanchez-the-roach

src/current/_includes/google_tag_manager.html

@@ -1,3 +1,4 @@
+{% if jekyll.environment == 'production' %}
 <!-- Google Tag Manager -->
 <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
     new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
@@ -8,4 +9,5 @@
 <!-- Google Tag Manager (noscript) -->
 <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-NR8LC4"
     height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
-    <!-- End Google Tag Manager (noscript) -->
+    <!-- End Google Tag Manager (noscript) -->
+{% endif %}