build(deps): bump capnp-rpc from 0.19.0 to 0.19.1

Bumps [capnp-rpc](https://github.com/capnproto/capnproto-rust) from 0.19.0 to 0.19.1.
- [Commits](capnproto/capnproto-rust@capnp-rpc-v0.19.0...capnp-v0.19.1)

---
updated-dependencies:
- dependency-name: capnp-rpc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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