crashloopbackoff of gitlab-shell containers during database unavailability

During this incident: production#3875 (closed) database performance was degraded. There was a correlating period of gitlab-shell containers being in crashloopbackoff state:

src: https://dashboards.gitlab.net/d/git-kube-containers/git-kube-containers-detail?viewPanel=2030366595&orgId=1&from=now-6h%2Fm&to=now%2Fm&var-PROMETHEUS_DS=Global&var-environment=gprd&var-stage=main&var-sigma=2

To be determined if it's also related to: production#3878 (closed)