chore(cargo): bump schemars from 0.8.16 to 0.8.19

Bumps [schemars](https://github.com/GREsau/schemars) from 0.8.16 to 0.8.19.
- [Release notes](https://github.com/GREsau/schemars/releases)
- [Changelog](https://github.com/GREsau/schemars/blob/master/CHANGELOG.md)
- [Commits](https://github.com/GREsau/schemars/compare/v0.8.16...v0.8.19)

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

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

deltachat-jsonrpc/Cargo.toml

@@ -16,7 +16,7 @@ required-features = ["webserver"]
 anyhow = "1"
 deltachat = { path = ".." }
 num-traits = "0.2"
-schemars = "0.8.13"
+schemars = "0.8.19"
 serde = { version = "1.0", features = ["derive"] }
 tempfile = "3.10.1"
 log = "0.4"