Bump schemars from 0.8.4 to 0.8.6

Bumps [schemars](https://github.com/GREsau/schemars) from 0.8.4 to 0.8.6.
- [Release notes](https://github.com/GREsau/schemars/releases)
- [Changelog](https://github.com/GREsau/schemars/blob/master/CHANGELOG.md)
- [Commits](GREsau/schemars@v0.8.4...v0.8.6)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ omicron-common = { path = "../../omicron-common" }
 # See build.rs for more about the "pq-sys" dependency.
 pq-sys = "*"
 reqwest = { version = "0.11.4", features = [ "json" ] }
-schemars = { version = "0.8.4", features = [ "uuid", "bytes", "chrono" ] }
+schemars = { version = "0.8.6", features = [ "uuid", "bytes", "chrono" ] }
 serde = { version = "1", features = [ "derive" ] }
 serde_json = "1.0.68"
 slog = { version = "2.5", features = [ "max_level_trace", "release_max_level_debug" ] }