Update Dependencies in Cargo.toml

[Florian]

Please update the dependencies listed in the Cargo.toml file to their latest versions. This will help ensure that our project is using the most up-to-date and secure versions of these packages.

After this update I will push a pull request to log4rs-gelf repository to also update packages.
I got a warning with latest vesrion of log4rs-gelf:

warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
note: to see what the problems were, use the option --future-incompat-report, or run cargo report future-incompatibilities --id 1

This warning is from a latest version of log4rs in the crate log4rs-gelf.

[Lopez Benjamin]

I'm currently working on merging gelf_logger and serde_gelf and adding support for logs's kv feature. This new release will also include some breaking changes but will keep the overall design. However, merging those two crates may cause some problems in log4rs-gelf, and we don't have plans on releasing a new version of this crate anytime soon.

Which crate(s) do you actually use?

[Florian]

I'm currently working on merging gelf_logger and serde_gelf and adding support for logs's kv feature. This new release will also include some breaking changes but will keep the overall design. However, merging those two crates may cause some problems in log4rs-gelf, and we don't have plans on releasing a new version of this crate anytime soon.

Which crate(s) do you actually use?

Hey, I currently use log4rs-gelf to use log4rs with ovh.
If you need some help to merge the two crates, I can help you.

[Lopez Benjamin]

gelf_logger v0.3.0 has been released with kvs support, dependencies update and merge of serde_gelf and gelf_logger.