chore(cargo): bump serde_json from 1.0.96 to 1.0.99

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.96 to 1.0.99.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.96...v1.0.99)

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

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

deltachat-rpc-server/Cargo.toml

@@ -17,7 +17,7 @@ anyhow = "1"
 env_logger = { version = "0.10.0" }
 futures-lite = "1.13.0"
 log = "0.4"
-serde_json = "1.0.96"
+serde_json = "1.0.99"
 serde = { version = "1.0", features = ["derive"] }
 tokio = { version = "1.29.1", features = ["io-std"] }
 tokio-util = "0.7.8"