Update Actions custom repository roles (#56250)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Jacob Wallraff <thyeggman@github.com>

Author: 3 people

data/reusables/organizations/additional-permissions.md

@@ -58,3 +58,12 @@ For more information, see [AUTOTITLE](/discussions).
 * Dismiss or reopen {% data variables.product.prodname_dependabot_alerts %}
 * View {% data variables.product.prodname_secret_scanning %} results
 * Dismiss or reopen {% data variables.product.prodname_secret_scanning %} results
+
+### Actions
+
+* Manage {% data variables.product.prodname_actions %} general settings
+* Manage runners
+* Manage secrets
+* Manage variables
+* Manage environments (including environment secrets and variables) 
+