Release 11.6

Merge on the 22nd at 14:30 UTC

> How to

Before release

• Create and push a branch with the release name (that will create a Docker image with the stable version).

During release

• Make sure the proper milestone is assigned to the MR.
• Edit content/_data/versions.yaml and rotate the versions.
• Edit content/404.html and add the old removed version to the list of redirects at the bottom of the file.
• Edit dockerfiles/Dockerfile.archives and add the new version.
• Edit Dockerfile.master and rotate the versions.
• (Optional) If there are changes in the stable branches of the docs after the release version Docker image was created, rerun the release version pipeline.
• Merge and manually run the scheduled pipeline.