Update to current `swash` 0.1.19 #326

Job	Run time
cargo clippy (android) (armv7-linux-androideabi)	43s
cargo clippy (windows-latest)	4m 27s
cargo check (msrv) (windows-latest)	1m 8s
cargo clippy (android) (aarch64-linux-android)	1m 34s
cargo check (msrv) (android) (armv7-linux-androideabi)	49s
cargo clippy (macos-latest)	2m 6s
cargo clippy (android) (x86_64-linux-android)	1m 31s
cargo check (msrv) (macos-latest)	30s
cargo check (msrv) (android) (aarch64-linux-android)	27s
cargo clippy (ubuntu-latest)	2m 22s
cargo check (msrv) (ubuntu-latest)	26s
cargo check (msrv) (android) (x86_64-linux-android)	51s
cargo doc (windows-latest)	1m 6s
cargo fmt	44s
cargo doc (macos-latest)	24s
cargo test (windows-latest)	1m 29s
cargo doc (ubuntu-latest)	19s
cargo test (macos-latest)	26s
typos	6s
cargo test (ubuntu-latest)	23s
	21m 51s

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