Update Rust crate toml to 0.8.19 #433

Job	Run time
Build and test (all features) (ubuntu-latest, 1.70)	33s
Cross-compile to aarch64	1m 9s
Build and test core crates (ubuntu-latest, 1.70)	39s
Build and test (all features) (ubuntu-latest, stable)	33s
Build and test core crates (ubuntu-latest, stable)	34s
Build and test (all features) (macos-latest, 1.70)	2m 36s
Build documentation (ubuntu-latest)	1m 2s
Build and test core crates (macos-latest, 1.70)	59s
Build and test (all features) (macos-latest, stable)	54s
Build and test core crates (macos-latest, stable)	1m 2s
Lint	28s
Build and test core crates (windows-latest, 1.70)	1m 50s
Build and test (all features) (windows-latest, 1.70)	2m 1s
Build and test core crates (windows-latest, stable)	2m 7s
cargo-compare extended tests (ubuntu-latest)	3m 25s
Build and test (all features) (windows-latest, stable)	1m 53s
cargo-compare extended tests (macos-latest)	7m 23s
	29m 8s

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