deps: update undici to 8.1.0 #5391

Job	Run time
Build slim tarball	1m 57s
x86_64-darwin: with shared libraries	39m 1s
aarch64-linux: with shared libraries	20m 21s
x86_64-linux: with shared libraries	23m 45s
aarch64-darwin: with shared libraries	22m 37s
	1h 47m 41s

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