Set the resource limits for Vault
What
Vault currently uses 5.6GiB of memory, so I'm bumping the request to 6GiB. The new nodes have 16GiB of memory and only Vault pods run on them (+ daemonsets), so a 12GiB limit seems reasonable to give some room while keeping the node healthy.
Why
See https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/23872#note_1431694644