Prepare 0.21.1 release #798

Job	Run time
rustfmt	15s
clippy	43s
feature (<none>)	42s
feature (macros)	44s
MSRV (1.75.0, cucumber-codegen, ubuntu)	1m 7s
MSRV (1.75.0, cucumber-codegen, macOS)	1m 6s
feature (timestamps)	40s
test (cucumber-codegen, stable, ubuntu)	59s
MSRV (1.75.0, cucumber-codegen, windows)	2m 30s
feature (output-json)	42s
test (cucumber-codegen, stable, macOS)	1m 2s
MSRV (1.75.0, cucumber, ubuntu)	3m 14s
feature (output-junit)	44s
test (cucumber-codegen, stable, windows)	2m 27s
MSRV (1.75.0, cucumber, macOS)	2m 57s
feature (libtest)	44s
test (cucumber-codegen, beta, ubuntu)	59s
MSRV (1.75.0, cucumber, windows)	4m 21s
feature (tracing)	40s
test (cucumber-codegen, beta, macOS)	55s
test (cucumber-codegen, beta, windows)	1m 42s
test (cucumber-codegen, nightly, ubuntu)	1m 27s
test (Book, ubuntu)	5m 34s
test (cucumber-codegen, nightly, macOS)	1m 26s
rustdoc (cucumber-codegen)	24s
test (Book, macOS)	7m 4s
test (cucumber-codegen, nightly, windows)	2m 28s
rustdoc (cucumber)	1m 1s
test (Book, windows)	7m 19s
test (cucumber, stable, ubuntu)	3m 6s
test (cucumber, stable, macOS)	2m 56s
test (cucumber, stable, windows)	4m 30s
test (cucumber, beta, ubuntu)	3m 3s
test (cucumber, beta, macOS)	2m 47s
test (cucumber, beta, windows)	4m 36s
test (cucumber, nightly, ubuntu)	3m 23s
test (cucumber, nightly, macOS)	4m 31s
test (cucumber, nightly, windows)	5m 0s
deploy (Book)	13s
release (GitHub)	0s
pr	0s
publish (crates.io)	0s
	1h 30m 1s

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