build(deps): bump bedrock2 from a7857fd to 8db73eb

Bumps [bedrock2](https://github.com/mit-plv/bedrock2) from `a7857fd` to `8db73eb`.
- [Release notes](https://github.com/mit-plv/bedrock2/releases)
- [Commits](mit-plv/bedrock2@a7857fd...8db73eb)

---
updated-dependencies:
- dependency-name: bedrock2
  dependency-type: direct:production
...

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