chore(deps): update rust crate serde_json to 1.0.115 #661

Job	Run time
Clippy (stable)	40s
Clippy (Future) (beta)	30s
Rustfmt	20s
Clippy (Future) (nightly)	36s
Build docs (stable, macos-latest)	56s
Build docs (stable, ubuntu-latest)	18s
Check MSRV (pace-rs, 1.74.1)	2m 46s
Build docs (stable, windows-latest)	1m 58s
ubuntu / stable / features	2m 40s
Check MSRV (pace_core, 1.74.1)	2m 12s
Test (stable, macos-latest)	1m 23s
Check MSRV (pace_cli, 1.74.1)	2m 12s
Test (stable, ubuntu-latest)	1m 0s
Test (stable, windows-latest)	2m 38s
Test (beta, macos-latest)	1m 28s
Test (beta, ubuntu-latest)	57s
Test (beta, windows-latest)	2m 26s
Result (CI)	1s
	25m 1s

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