Merge pull request #14835 from github/lucascosti/runner-latest-note

Clarify -latest for GH-hosed runners

Author: ramyaparimi

data/reusables/github-actions/supported-github-runners.md

@@ -83,6 +83,12 @@ macOS Catalina 10.15
 </tbody>
 </table>
 
+{% note %}
+
+**Note:** The `-latest` virtual environments are the latest stable images that {% data variables.product.prodname_dotcom %} provides, and might not be the most recent version of the operating system available from the operating system vendor.
+
+{% endnote %}
+
 {% warning %}
 
 <b>Note:</b> Beta and Deprecated Images are provided "as-is", "with all faults" and "as available" and are excluded from the service level agreement and warranty. Beta Images may not be covered by customer support.