Bump serde_json 1.0.24 -> 1.0.25
Bump serde_json 1.0.24 -> 1.0.25

This fixes 'cannot find macro `json_internal!` in this scope' RLS
compilation error in Rust CI, presumably due to a local macro fix in
serde_json 1.0.25
(https://github.com/serde-rs/json/commit/e40cbad70b39a0dd7975be8e5ad9018e2d45f791)

aidancully/rust,aidancully/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,graydon/rust,GBGamer/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust