Investigate Deployment crash loop

When deploying GitLab in !101 (merged), I saw these errors in the Operator logs:

2021-03-04T02:06:10.017Z ERROR controller Reconciler error {"reconcilerGroup": "apps.gitlab.com", "reconcilerKind": "GitLab", "controller": "gitlab", "name": "gitlab", "namespace": "gitlab-system", "error": "Operation cannot be fulfilled on deployments.apps "gitlab-sidekiq-all-in-1-v1": the object has been modified; please apply your changes to the latest version and try again"}

│ manager 2021-03-04T18:52:58.306Z ERROR controller Reconciler error {"reconcilerGroup": "apps.gitlab.com", "reconcilerKind": "GitLab", "controller": "gitlab", "name": "gitlab", "namespace": "gitlab-system", "error": "Operation cannot be fulfilled on deployments.apps "gitlab-webservice-default": the object has been modified; please apply your changes to the latest version and try again"}

│ manager 2021-03-04T18:53:29.338Z ERROR controller Reconciler error {"reconcilerGroup": "apps.gitlab.com", "reconcilerKind": "GitLab", "controller": "gitlab", "name": "gitlab", "namespace": "gitlab-system", "error": "Operation cannot be fulfilled on deployments.apps "gitlab-registry": the object has been modified; please apply your changes to the latest version and try again"}

The first pod(s) related to these deployments stay running indefinitely, but new ones are periodically created and then disappear within just a few seconds.

We should follow up to ensure this is fixed. When trying to log into the GitLab instance via the browser (port-forwarded the service), I got an error (422). Not sure if this is related but the only other pod with issues was registry (addressed in !90 (merged)).