Fix (creation of the rustfs-credentials crate) smuggled in a fairly large panic fix PR https://github.com/rustfs/rustfs/pull/1291#:~:text=Fixes%20CVE%2DXXXX%2DX

Fix (creation of the rustfs-credentials crate) smuggled in a fairly large panic fix PR https://github.com/rustfs/rustfs/pull/1291#:~:text=Fixes%20CVE%2DXXXX%2DXXXX%20RustFS%20gRPC%20GetMetrics%20deserialization%20panic%20enables%20remote%20DoS https://github.com/rustfs/rustfs/pull/1291#:~:text=Fixes%20C... , "fix: Prevent panic in GetMetrics gRPC handler on invalid input"