lelandf

By default, WordPress will not apply <a href="https://codex.wordpress.org/Configuring_Automatic_Background_Updates" rel="nofollow ugc">automatic background updates</a> if it detects a version control system (like Git or Subversion) in the WordPress directory or any of its parent directories.
WordPress does this because it assumes that if version control systems are present, the site owners have their own system in place for managing updates, and WordPress doesn’t want to mess with that.
However, minor updates can contain critical security vulnerability fixes, and those aforementioned site owners may consider the benefit of having minor releases automatically updated by WordPress greater than the risks of waiting too long to apply those updates themselves.
If that sounds like you, then you may wish to consider installing this option-free plugin.
Just activate when you need it.
Perhaps before a “disconnected” vacation when you don’t want to run the risk of a security update being released during it, and having no way of applying said update until your return.
Deactivate it when you don’t.

Forced Auto Updates

Apply automatic background updates for minor releases of WordPress core, even with version control systems present.

Alex Moss

Peadig

Disables the default notification email sent by WordPress for an automatic core update. Simply activate the plugin to disable the notification email 🙂
<ul>
<li><a href="http://peadig.com/wordpress-plugins/disable-wordpress-core-update-email/" rel="nofollow ugc">Disable WordPress Core Update Email</a> Plugin homepage.</li>
<li>More <a href="http://peadig.com/wordpress-plugins/" rel="nofollow ugc">WordPress Plugins</a>.</li>
<li>Peadig: A <a href="http://peadig.com/" rel="nofollow ugc">WordPress Bootstrap</a> theme framework.</li>
</ul>

Disable WordPress Core Update Email

The simplicity of the plugin helps it be lightweight & easy to use.

That also means the one line of active PHP code that it consists of (it then being what WordPress recommends in its current documentation per https://wordpress.org/support/article/configuring-automatic-background-updates/#disable-emails-via-filter) is likely to continue to work exactly as expected unless WordPress were to completely overhaul its setup regarding this (with there appearing to be no plans for this.) Especially considering it's using a filter so it's even more flexible if things were to change in the future (won't outright break things due to a code error beyond WordPress doing a fundamental change to a core function like add_filter or __return_false & that'd then break the majority of plugins & themes out there [they'd need a good reason for doing so & it appears they obviously have no plans for doing that either.])

Does exactly what it says it does (even 5 years since last update)

Disables the default notification email sent by WordPress for an automatic core update. Simply activate the plugin to disable the notification email : …

Forced Auto Updates vs Disable WordPress Core Update Email