Update Rust crate serde_json to 1.0.114

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
serde_json	dependencies	patch	1.0.113 -> 1.0.114

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Release Notes

serde-rs/json (serde_json)

### [`v1.0.114`](https://togithub.com/serde-rs/json/releases/tag/v1.0.114) [Compare Source](https://togithub.com/serde-rs/json/compare/v1.0.113...v1.0.114) - Fix unused_imports warnings when compiled by rustc 1.78

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