Add details about Actions free usage use cases to the docs (#58068)

Co-authored-by: mc <[email protected]>

Author: gmondello

content/billing/concepts/product-billing/github-actions.md

@@ -52,6 +52,13 @@ The following amounts of time for standard runners and artifact storage are incl
 > [!NOTE]
 > Included minutes cannot be used for larger runners. These runners will always be charged for, even when used by public repositories.
 
+The use of standard {% data variables.product.github %}-hosted runners is free:
+
+* In public repositories
+* For {% data variables.product.prodname_pages %}
+* For {% data variables.product.prodname_dependabot %}
+* For the agentic features ({% data variables.release-phases.public_preview %}) in {% data variables.copilot.copilot_code-review %}
+
 ## Using more than your included quota
 
 If your account does not have a valid payment method on file, usage is blocked once you use up your quota.