Bump schemars from 0.8.20 to 0.8.21 (#418)

Bumps [schemars](https://github.com/GREsau/schemars) from 0.8.20 to 0.8.21.
- [Release notes](https://github.com/GREsau/schemars/releases)
- [Changelog](https://github.com/GREsau/schemars/blob/master/CHANGELOG.md)
- [Commits](GREsau/schemars@v0.8.20...v0.8.21)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

kittycad/Cargo.toml

@@ -32,7 +32,7 @@ reqwest-conditional-middleware = { version = "0.2.1", optional = true }
 reqwest-middleware = { version = "0.2.2", optional = true }
 reqwest-retry = { version = "0.2.2", optional = true }
 reqwest-tracing = { version = "0.4.4", features = ["opentelemetry_0_17"], optional = true }
-schemars = { version = "0.8.16", features = ["bigdecimal04", "bytes", "chrono", "url", "uuid1"] }
+schemars = { version = "0.8.21", features = ["bigdecimal04", "bytes", "chrono", "url", "uuid1"] }
 serde = { version = "1", features = ["derive"] }
 serde_bytes = "0.11"
 serde_json = "1"