CI: update boost download link #6451

Job	Run time
clang-format	21s
linux_clang-14_cuda-11.2_debug_analysis	21m 22s
windows_cl-2022_debug_analysis	2h 32m 2s
macos_xcode-15.4_debug_analysis	14m 50s
linux_gcc-12_debug_analysis	21m 28s
macos_xcode-15.4_release	12m 10s
macos_xcode-16.1_debug	12m 34s
windows_cl-2022_release	2h 28m 51s
windows_cl-2022_debug	2h 25m 12s
linux_gcc-11_debug	20m 21s
linux_gcc-12_release_c++20	20m 39s
linux_gcc-13_debug	18m 23s
linux_clang-13_release	18m 19s
linux_clang-14_release	21m 51s
linux_clang-15_debug	15m 19s
linux_clang-16_debug_ubsan	20m 49s
linux_clang-16_debug_tsan	17m 14s
	11h 21m 45s

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