Bump workflow_utils to v0.19.0 to use miniforge
We have migrated from miniconda to miniforge, so this version bump uses the new conda setup script.
Bug: T372417
How to register an account on GitLab. Due to spam, new accounts are locked until approved by an admin or the approver bot. Your GitLab account gets automatically approved within one hour if you are a member of Trusted Contributors in Gerrit, or a member of the Trusted-Contributors group in Phabricator and linked your Developer account to your Phabricator account. If none of these apply, you can file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
We have migrated from miniconda to miniforge, so this version bump uses the new conda setup script.
Bug: T372417