feat: Update the IMAP exporter image tag in non-prod
What
Updates the container image used by the exporter in GSTG & pre. This includes a golang version bump as well as additional log output when the IMAP server connection can't be established.
Relevant code changes: gitlab-org/prometheus/prometheus-imap-mailbox-exporter@166947cb
Why
Related issue: gitlab-com/gl-infra/production-engineering#25179 (closed)
Edited by Matt Miller