Use Font Awesome icons from your own host/server. Update the latest releases from GitHub.
Choose the major version and install the latest minor version. For example: Choose major version 6, and install the latest of 6.x.xx. 
Currently supported for version 4, 5, 6, 7.
This plugin did not use CDN (content delivery network). If you want to use CDN, please use official Font Awesome plugin instead.
You can dequeue duplicated Font Awesome handles from other plugins or themes to prevent conflict.
You can disable enqueue from this plugin in case you would like to do it manually. 
To get asset files for manually enqueue, use this code.
<pre>
if (function_exists('rdfontawesome_get_enqueue_files')) {
 $result = rdfontawesome_get_enqueue_files();
 if (isset($result['css']) && is_array($result['css'])) {
 $faVersion = ($result['faVersion'] ?? false);
 $i = 1;
 foreach ($result['css'] as $css) {
 wp_enqueue_style('myplugin_fontawesome_' . $i, $css, [], $faVersion);
 ++$i;
 }
 unset($css, $faVersion, $i);
 }
}
</pre>
To get URL base of the Font Awesome assets for use another files, use this code.
<pre>
if (function_exists('rdfontawesome_get_public_url_base')) {
 echo rdfontawesome_get_public_url_base();
}
</pre>
Tested up to PHP 8.5.
Font Awesome files are belong to https://fontawesome.com

Rundiz Font Awesome

Use Font Awesome from your host and update from GitHub.

WebbPlatsen

joho68

This WordPress shortcode plugin generates inline HTML for the Font Awesome icon libray.
You can use any icon code supported by Font Awesome 7.
A few notes about this plugin:
<ul>
<li>You may choose to host your Font Awesome 7 files locally (default)</li>
<li>You may choose to use the Font Awesome CDN</li>
<li>You may choose to specify a custom URL for your Font Awesome files</li>
<li>You may choose to disable Font Awesome assets if you include them elsewhere</li>
<li>This plugin may create entries in your PHP error log (if active)</li>
<li>This plugin contains no tracking code and does not process or collect any information about the visitor</li>
<li>Tested with WordPress 5.5-6.9</li>
<li>Tested with PHP 7.x and PHP 8.x</li>
<li>See css/fontawesome/LICENSE.TXT for Font Awesome licensing details</li>
</ul>
<h3>Configuration</h3>
Decide if you want to use the included Font Awesome assets, they are the time of this writing at version 7.2. If you want to use another version, you can replace the included assets, use another URL for the CSS and webfont assets, or specify a Font Awesome CDN kit URL.
<h3>Usage</h3>
There is one shortcode available with this plugin:
<pre><code>[scfa][/scfa]
</code></pre>
<h4>General format</h4>
This is intended as a quick reference for the shortcode. For a complete list of Font Awesome classes, please see fontawesome.com. Some icon styles may only be available with a Pro license. You can (obviously) specify everything class related in the class=”” parameter if that is more convenient for you.
Generate element with icon and default (icon) style:
<pre><code>[scfa icon="address-book"][/scfa]
</code></pre>
Generate element with the specified style and icon:
<pre><code>[scfa icon="far address-book"][/scfa]
</code></pre>
Generate element with the specified style and icon and size:
<pre><code>[scfa icon="far address-book" size="5x"][/scfa]
</code></pre>
There are more examples in the SCFA plugin settings screen.
<h3>Credits</h3>
The Shortcodes for Font Awesome Plugin was written by Joaquim Homrighausen while converting caffeine into code.
Shortcodes for Font Awesome is sponsored by <a href="https://www.webbplatsen.se" rel="nofollow ugc">WebbPlatsen i Sverige AB</a>, Sweden.
This plugin can also be downloaded from <a href="https://code.webbplatsen.net/wordpress/wordpress-shortcodes-for-font-awesome/" rel="nofollow ugc">code.webbplatsen.net</a> and <a href="https://github.com/joho1968/SCFA" rel="nofollow ugc">GitHub</a>
<a href="https://fontawesome.com" rel="nofollow ugc">Font Awesome</a>
Stay safe!

Shortcodes for Font Awesome

Generate inline HTML with Font Awesome icon libray by using shortcodes.

Rundiz Font Awesome vs Shortcodes for Font Awesome