Bump the patch-dependencies group with 2 updates (#966)

Bumps the patch-dependencies group with 2 updates: [serde_json](https://github.com/serde-rs/json) and [tokio](https://github.com/tokio-rs/tokio).


Updates `serde_json` from 1.0.120 to 1.0.121
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.120...v1.0.121)

Updates `tokio` from 1.39.1 to 1.39.2
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](tokio-rs/tokio@tokio-1.39.1...tokio-1.39.2)

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

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

node/cli/Cargo.toml

@@ -30,7 +30,7 @@ log             ="0.4.22"
 pallet-im-online={ version="28.0.0" }
 rand            ="0.8.5"
 serde           ={ version="1.0.204", features=["derive"] }
-serde_json      ='1.0.120'
+serde_json      ='1.0.121'
 
 # Substrate Client