deps: update zlib to 1.3.1-5aa6173 #31

Job	Run time
x86_64-linux: with shared libraries	28m 36s
x86_64-darwin: with shared libraries	53m 59s
aarch64-linux: with shared libraries	25m 41s
aarch64-darwin: with shared libraries	30m 31s
	2h 18m 47s

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