bitwarden_secrets_manager: implement rate limit retry with backoff (#8238)
* bitwarden_secrets_manager: implement rate limit retry with backoff (#8230)
* bitwarden_secrets_manager: add changelog fragment for 90cd2d61 (#8238)
* bitwarden_secrets_manager: clarify "Too many requests" is an error condition (#8238)
* bitwarden_secrets_manager: avoid an extra _run_with_retry execution after the last (very long) delay
* bitwarden_secrets_manager: changelog fragment key and reference issue url
(cherry picked from commit a05a5982a6)
Co-authored-by: Matt Adams <matt@4dk.me>
