build

ci/mingw: add second download URL for iconv and freetype #17378

Job	Run time
mingw (i686, wine32)	25m 19s
linux-ffmpeg-6-1	1m 10s
freebsd	5m 6s
msys2 (mingw64, windows-2025-vs2026)	5m 47s
msys2 (ucrt64, windows-2025-vs2026)	6m 17s
openbsd	5m 21s
linux-fuzz	1m 50s
macos (macos-14, arm, Xcode_15.0)	5m 5s
msys2 (clang64, windows-2025-vs2026, uninitialized)	5m 52s
linux (gcc, g++, -Db_ndebug=true)	2m 42s
msys2 (clangarm64, windows-11-arm)	7m 32s
macos (macos-26, test, -target arm64-apple-macosx10.15, 10.15)	2m 57s
win32 (aarch64-pc-windows-msvc, arm64, windows-11-arm)	21m 25s
macos (macos-15, arm)	4m 9s
win32 (x86_64-pc-windows-msvc, x64, windows-2025-vs2026)	50m 5s
mingw (x86_64, wine64)	31m 12s
msys2 (clang64, windows-2025-vs2026, true)	5m 31s
macos (macos-26, arm)	3m 53s
linux (clang, clang++, lld, -Db_lto=true -Db_lto_mode=thin)	3m 14s
msys2 (clang64, windows-2025-vs2026, zero)	5m 44s
msys2 (clang64, windows-2025-vs2026, pattern)	5m 39s
macos (macos-15-intel)	7m 44s
Publish git release	1m 0s
	3h 34m 34s

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