build(deps): bump slotmap from 1.0.6 to 1.0.7

Bumps [slotmap](https://github.com/orlp/slotmap) from 1.0.6 to 1.0.7.
- [Changelog](https://github.com/orlp/slotmap/blob/master/RELEASES.md)
- [Commits](orlp/slotmap@v1.0.6...v1.0.7)

---
updated-dependencies:
- dependency-name: slotmap
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>