<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#40540
go-kit/log is no longer a direct dependency; moved kitlog adapter
required for some 3rd party libraries into its own package
# Checklist for submitter
- [ ] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
- Present in previous PR
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Chores**
* Modernized logging across the codebase: switched from legacy logging
wrappers to Go's standard slog, updated adapters, tests, tools, and
server components.
* Threaded the new slog logger through test utilities and tooling;
adjusted a small number of logging-related function/constructor
signatures to accept the new logger type (minor compatibility updates).
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Victor Lyuboslavsky
62186cb6bd