Merge pull request #1927 from alan-turing-institute/update_release_ch…

…ecklist

Add action to update RTD docs

.github/ISSUE_TEMPLATE/release_checklist.md

@@ -31,6 +31,7 @@ Refer to the [Deployment](https://data-safe-haven.readthedocs.io/en/latest/deplo
     - [ ] Save the transcript of your tier 3 SRE deployment
 - [ ] Complete the [Security evaluation checklist](https://data-safe-haven.readthedocs.io/en/latest/deployment/security_checklist.html) from the deployment documentation
 - [ ] Update [SECURITY.md](../../SECURITY.md) and [VERSIONING.md](../../VERSIONING.md)
+- [ ] Add the new versions tag as an active build on [Read The Docs](https://readthedocs.org) (You can add as a hidden build, before release, to preview)
 
 ### For major releases only