Bump capnpc from 0.17.2 to 0.18.0

Bumps [capnpc](https://github.com/capnproto/capnproto-rust) from 0.17.2 to 0.18.0.
- [Commits](capnproto/capnproto-rust@capnpc-v0.17.2...capnpc-v0.18.0)

---
updated-dependencies:
- dependency-name: capnpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -69,7 +69,7 @@ tempfile = "3.8.0"
 rstest = "0.18.2"
 
 [build-dependencies]
-capnpc = "0.17.1"
+capnpc = "0.18.0"
 
 [lib]
 name = "console_backend"