chore(deps): bump capnp from 0.26.0 to 0.27.1 (#378)

Bumps [capnp](https://github.com/capnproto/capnproto-rust) from 0.26.0
to 0.27.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/dbfeb6578924c32e89b7c7463d9bb5be910c2218"><code>dbfeb65</code></a>
prepare for capnp-v0.27.1 release</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/c4c2a56556c1a7a9d10151d951d82e6867d34a5e"><code>c4c2a56</code></a>
[ScratchSpaceHeapAllocator] allow full scratch space to be used</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/2228b71e55cee819c30450bb9bfd9c1f6a722429"><code>2228b71</code></a>
Bump actions-rs-plus/clippy-check from 2.7.0 to 2.7.1 (<a
href="https://redirect.github.com/capnproto/capnproto-rust/issues/679">#679</a>)</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/b4050dc8fba019a67f989c33fd97ea3871f16574"><code>b4050dc</code></a>
prepare for v0.27.0 release</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/95aa3ccfe44be6171f8ba6001c6422de7b5f2415"><code>95aa3cc</code></a>
cleanups enabled by schema Eq/Hash support (<a
href="https://redirect.github.com/capnproto/capnproto-rust/issues/678">#678</a>)</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/c406b4ee68a2e1ce4905cccac6a8d95db8232835"><code>c406b4e</code></a>
make Disconnector wait for shutdown (<a
href="https://redirect.github.com/capnproto/capnproto-rust/issues/677">#677</a>)</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/baeb528d01ace9a2001623d3f384c9dc3d9af000"><code>baeb528</code></a>
clean up CapTable (<a
href="https://redirect.github.com/capnproto/capnproto-rust/issues/676">#676</a>)</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/7b7e5fd619a9fba494d81f33d237d3e52f043819"><code>7b7e5fd</code></a>
make more private::layout things pub(crate) instead of pub</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/5b766751f744ad72d0d7b6df12dc349773c3ac8b"><code>5b76675</code></a>
make WirePoint pub(crate) instead of pub</li>
<li><a
href="https://github.com/capnproto/capnproto-rust/commit/202340a284150c8689a6609c9739a300a77e174b"><code>202340a</code></a>
update doc comments on PrimitiveElement</li>
<li>Additional commits viewable in <a
href="https://github.com/capnproto/capnproto-rust/compare/capnp-v0.26.0...capnp-v0.27.1">compare
view</a></li>
</ul>
</details>
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Cargo.lock

@@ -11,7 +11,7 @@ repository  = "https://github.com/hyperpolymath/echidna"
 build       = "build.rs"
 
 [dependencies]
-capnp = "0.26"
+capnp = "0.27"
 
 [build-dependencies]
 capnpc = "0.26"