download_libs downloader using wget2 #18

Job	Run time
build-msys2 (mingw64)	5m 20s
build-linux64-platforms (linux64, 64gcc6)	2m 45s
build-ios-tvos (ios, ios)	2m 46s
build-emscripten (emscripten)	30s
build-macos (osx, xcode)	2m 49s
build-vs2022 (x64)	1m 4s
build-macos (osx, makefiles)	3m 16s
build-vs2022 (ARM64)	1m 5s
rpi-build (armv6l, armhf, arm-linux-gnueabihf, 1)	3m 16s
build-vs2022 (ARM64EC)	1m 9s
rpi-build (aarch64, arm64, aarch64-linux-gnu, 1)	2m 40s
	26m 40s

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