build(deps): bump capnp from 0.14.0 to 0.14.11 in /services/json2capnp

Bumps [capnp](https://github.com/capnproto/capnproto-rust) from 0.14.0 to 0.14.11.
- [Release notes](https://github.com/capnproto/capnproto-rust/releases)
- [Commits](capnproto/capnproto-rust@capnp-v0.14.0...capnp-v0.14.11)

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

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