test: update WPT for url to 81a2aed262 #2631

Job	Run time
Build slim tarball	1m 34s
x86_64-darwin: with shared libraries	37m 38s
x86_64-linux: with shared libraries	27m 50s
aarch64-darwin: with shared libraries	27m 42s
aarch64-linux: with shared libraries	22m 57s
	1h 57m 41s

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