chore(deps): update rust crate serde_json to v1.0.138 #720

Job	Run time
cargo check (ubuntu-latest)	26s
cargo clippy -- -D warnings (ubuntu-latest)	23s
cargo check (macOS-latest)	25s
Code Coverage (ubuntu-latest, unix)	1m 57s
cargo clippy -- -D warnings (macOS-latest)	19s
Code Coverage (macos-latest, macos)	1m 47s
cargo check (windows-latest)	2m 26s
cargo clippy -- -D warnings (windows-latest)	2m 26s
Code Coverage (windows-latest, windows)	4m 44s
cargo fmt --all -- --check	4s
cargo test (ubuntu-latest)	30s
cargo test (macOS-latest)	28s
cargo test (windows-latest)	2m 34s
	18m 29s

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