build(deps): bump Externals/sse2neon from `42c7047` to `4874418` #4921

Job	Run time
FreeBSD Debug x86_64	6m 52s
FreeBSD Release x86_64	9m 27s
Ubuntu Debug amd64 (gcc)	6m 20s
Windows Debug x64 (msvc)	35m 14s
OpenBSD Debug x86_64	11m 26s
Ubuntu Release amd64 (gcc)	6m 19s
Windows Debug x86 (msvc)	35m 11s
OpenBSD Release x86_64	9m 59s
Ubuntu Debug amd64 (clang)	6m 37s
Windows Mixed x64 (msvc)	35m 13s
NetBSD Debug x86_64	9m 55s
Ubuntu Release amd64 (clang)	9m 43s
Windows Mixed x86 (msvc)	4m 55s
NetBSD Release x86_64	8m 50s
Windows Release x64 (msvc)	9m 50s
Alpine Debug x86_64 (gcc)	7m 0s
Alpine Release x86_64 (gcc)	10m 0s
Windows Release x86 (msvc)	9m 38s
Alpine Debug x86 (gcc)	7m 13s
Windows Release Master Gold x64 (msvc)	9m 9s
Alpine Release x86 (gcc)	10m 27s
Windows Release Master Gold x86 (msvc)	8m 7s
Fedora Debug x86_64 (gcc)	18m 32s
Fedora Release x86_64 (gcc)	16m 22s
macOS Debug x86_64 (clang)	7m 29s
macOS Release x86_64 (clang)	9m 55s
macOS Debug arm64 (clang)	4m 30s
macOS Release arm64 (clang)	6m 14s
	5h 30m 27s

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