chore: release v5.6.0 #3492

Job	Run time
Audit	2m 30s
Compilation tests	22m 32s
Clippy and fmt	4m 46s
ubuntu-latest 1.79	12m 34s
ubuntu-latest 1.79 --features unstable,legacy,__abi-generate	21m 53s
ubuntu-latest stable	12m 21s
Windows	6m 4s
ubuntu-latest stable --features unstable,legacy,__abi-generate	21m 31s
macos-latest 1.79	3m 55s
macos-latest 1.79 --features unstable,legacy,__abi-generate	8m 41s
macos-latest stable	3m 23s
macos-latest stable --features unstable,legacy,__abi-generate	7m 37s
	2h 7m 47s

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