Replace `iohk-monitoring` with `trace-dispatcher`

`iohk-monitoring` is outdated and has been replaced by `trace-dispatcher` in our dependency tree.

However, it's unclear how big an impact this makes, and how primitives from the former can be translated to the latter.

This needs to be investigating, and the outcome of this investigation needs to be implemented into relevant places in the codebase.

Start by locating every use of `iohk-monitoring` and `trace-dispatcher` in the codebase, then compare the primitives provided by each dependency. Document the required translations and implement the migration in all relevant places; done means the outdated dependency is no longer used and the affected code builds successfully.

Written by the indexing model from the issue text.