feat: Support GA4 - Google Analytics 4 properties

[9468305]

Summary

Google Analytics has just released a new version, named GA4(Google Analytics 4 properties).
Those javascript has been changed.
So would you upgrade to support this new version?

Meet the next generation of Google Analytics

Motivation

The current jeklly configuration works great. But when I upgrade my GA to GA4 on GA website, the tracing data would missing obviously.

Guide-level explanation

The current config tag is google_analytics: UA-TRACE-ID.
Maybe add another tag, such as google_analytics_4: G-TRACE-ID.

Reference-level explanation

it's easy to upgrade, by Google's guide.

<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-TRACEID_XXX"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-WY4HPW1HYT');
</script>

Drawbacks

none.

Unresolved Questions

none.

[Victornovikov]

Can someone help me understand how to fix this by adjusting _includes files?
I tried the following approach

1. go into gem folder and edit analytics.html file
2. update code there with new script
3. rebuild with bundle exec Jekyll build

sadly I don't see any changes.

I am new to Jekyll / Ruby and appreciate any guidance.

[9468305]

#561 is the right answer.