cargo: update dependencies
This updates "core" and "simple" dependencies. A future MR will update the async dependencies to more modern tokio versions.
A GitLab update will be applied on May 9th, between 8am and 10am, EDT (UTC-04:00). This site may have intermittent delays during that time.
This updates "core" and "simple" dependencies. A future MR will update the async dependencies to more modern tokio versions.