libwebkit2gtk41: update to 2.50.4 #65945

Job	Run time
Lint templates	54s
Build packages (x86_64-musl, x86_64-musl, musl, linux/amd64, 1)	16m 57s
Build packages (armv7l, x86_64, glibc, linux/amd64, 0)	22m 48s
Build packages (aarch64-musl, x86_64-musl, musl, linux/amd64, 0)	19m 18s
Build packages (x86_64, x86_64, glibc, linux/amd64, 1)	15m 8s
Build packages (i686, i686, glibc, linux/386, 1)	22m 47s
Build packages (aarch64, x86_64, glibc, linux/amd64, 0)	17m 16s
Build packages (armv6l-musl, x86_64-musl, musl, linux/amd64, 0)	22m 48s
	2h 17m 56s

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