chore(deps): bump capnpc from 0.25.3 to 0.26.0

Bumps [capnpc](https://github.com/capnproto/capnproto-rust) from 0.25.3 to 0.26.0.
- [Commits](capnproto/capnproto-rust@capnpc-v0.25.3...capnp-v0.26.0)

---
updated-dependencies:
- dependency-name: capnpc
  dependency-version: 0.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -14,4 +14,4 @@ build       = "build.rs"
 capnp = "0.25"
 
 [build-dependencies]
-capnpc = "0.25"
+capnpc = "0.26"