Bump dropshot from 53106a8 to 1da9d81

Bumps [dropshot](https://github.com/oxidecomputer/dropshot) from `53106a8` to `1da9d81`.
- [Release notes](https://github.com/oxidecomputer/dropshot/releases)
- [Commits](oxidecomputer/dropshot@53106a8...1da9d81)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]