Errors can't be used in a multithreaded environment

[mmartinv]

I am upgrading to v0.5.2 version and it looks like there are some changes that make the use of CoseError not possible in multithreaded environments. The actual error I get is:

error[E0277]: `(dyn std::error::Error + 'static)` cannot be sent between threads safely
  --> db/src/postgres.rs:34:42
   |
34 |             contents: ov.serialize_data()?,
   |                                          ^ `(dyn std::error::Error + 'static)` cannot be sent between threads safely
   |
   = help: the trait `Send` is not implemented for `(dyn std::error::Error + 'static)`
   = help: the trait `FromResidual<Result<Infallible, E>>` is implemented for `Result<T, F>`
   = note: required for `Unique<(dyn std::error::Error + 'static)>` to implement `Send`
note: required because it appears within the type `Box<(dyn std::error::Error + 'static)>`
  --> /builddir/build/BUILD/rust-1.84.0-build/rustc-1.84.0-src/library/alloc/src/boxed.rs:233:12
note: required because it appears within the type `aws_nitro_enclaves_cose::error::CoseError`
  --> /home/mmartinv/.cargo/registry/src/index.crates.io-6f17d22bba15001f/aws-nitro-enclaves-cose-0.5.2/src/error.rs:16:10
   |
16 | pub enum CoseError {
   |          ^^^^^^^^^
note: required because it appears within the type `fdo_data_formats::Error`
  --> /home/mmartinv/devel/src/github.com/fdo-rs/worktrees/update-aws-nitro-enclaves-cose/data-formats/src/errors.rs:21:10
   |
21 | pub enum Error {
   |          ^^^^^
   = note: required for `anyhow::Error` to implement `From<fdo_data_formats::Error>`
   = note: required for `Result<(), anyhow::Error>` to implement `FromResidual<Result<Infallible, fdo_data_formats::Error>>`

[mmartinv]

@eugkoira @petreeftime could you please take a look at the proposed fix? does it make sense? I am pinging blindly, not sure if you are the right people :(