serde_with_macros v1.5.1

Added

• The minimal supported Rust version (MSRV) is now specified in the Cargo.toml via the rust-version field. The field is supported in Rust 1.56 and has no effect on versions before.

  More details: https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-rust-version-field