libwebkit2gtk41: update to 2.50.4 #65937

Job	Run time
Lint templates	1m 0s
Build packages (x86_64, x86_64, glibc, linux/amd64, 1)	5m 17s
Build packages (armv6l-musl, x86_64-musl, musl, linux/amd64, 0)	7m 50s
Build packages (armv7l, x86_64, glibc, linux/amd64, 0)	7m 30s
Build packages (x86_64-musl, x86_64-musl, musl, linux/amd64, 1)	3m 59s
Build packages (aarch64-musl, x86_64-musl, musl, linux/amd64, 0)	6m 20s
Build packages (i686, i686, glibc, linux/386, 1)	4m 52s
Build packages (aarch64, x86_64, glibc, linux/amd64, 0)	6m 48s
	43m 36s

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