chore: release v3.4.0 #854

Job	Run time
cargo-lock	7s
runtime-benchmarks (args_3)	55s
runtime-benchmarks (args_5)	1m 6s
runtime-benchmarks (args_10_alloc)	55s
cargo-fmt	18s
cargo-machete	2s
runtime-benchmarks (args_10_structs)	1m 7s
cargo-doc (ubuntu)	21s
runtime-benchmarks (args_10)	51s
cargo-doc (windows)	2m 45s
cargo-miri	1m 50s
runtime-benchmarks (args_20)	1m 15s
cargo-doc (macos)	29s
compilation-benchmarks	2m 8s
test-msrv (ubuntu)	58s
test-unstable (beta)	30s
version-sync	3s
test-unstable (nightly)	27s
test-stable (ubuntu)	1m 15s
test-stable (windows)	4m 23s
test-stable (macos)	1m 23s
test-msrv (windows)	1m 48s
prettier	5s
test-msrv (macos)	1m 23s
taplo-fmt	3s
typos	4s
website-build	31s
	27m 2s

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