Bump serde_json from 1.0.114 to 1.0.115 (#2180)

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.114 to 1.0.115.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.114...v1.0.115)

---
updated-dependencies:
- dependency-name: serde_json
  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>

Cargo.toml

@@ -63,7 +63,7 @@ scale-info = { version = "2.11", default-features = false }
 schemars = { version = "0.8" }
 secp256k1 = { version = "0.28.2" }
 serde = { version = "1.0.197", default-features = false }
-serde_json = { version = "1.0.114" }
+serde_json = { version = "1.0.115" }
 sha2 = { version = "0.10" }
 sha3 = { version = "0.10" }
 static_assertions = { version = "1.1" }