Bump dropshot from 115dd34 to 82c8fe4 (#969)

Bumps [dropshot](https://github.com/oxidecomputer/dropshot) from `115dd34` to `82c8fe4`.
- [Commits](oxidecomputer/dropshot@115dd34...82c8fe4)

---
updated-dependencies:
- dependency-name: dropshot
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]