chore: release v3.4.0 #853

Job	Run time
cargo-lock	7s
compilation-benchmarks	2m 4s
cargo-miri	1m 49s
test-msrv (ubuntu)	59s
runtime-benchmarks (args_3)	54s
test-msrv (windows)	1m 48s
runtime-benchmarks (args_5)	1m 11s
test-msrv (macos)	1m 12s
test-stable (ubuntu)	1m 22s
runtime-benchmarks (args_10_alloc)	1m 29s
test-stable (windows)	3m 25s
test-unstable (beta)	26s
runtime-benchmarks (args_10_structs)	53s
test-stable (macos)	1m 36s
test-unstable (nightly)	31s
version-sync	5s
runtime-benchmarks (args_10)	59s
runtime-benchmarks (args_20)	53s
cargo-doc (ubuntu)	20s
cargo-fmt	22s
cargo-machete	3s
cargo-doc (windows)	1m 35s
cargo-doc (macos)	37s
taplo-fmt	6s
prettier	6s
website-build	27s
typos	6s
	25m 25s

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