Update boostbook from master #2150

Job	Run time
b2-posix (ubuntu-20.04)	11m 41s
b2-posix (ubuntu-22.04)	11m 29s
b2-posix (macos-12)	21m 44s
b2-windows (windows-2019)	24m 42s
b2-posix (macos-13)	20m 58s
cmake-install-posix (ubuntu-20.04)	6m 0s
cmake-install-windows (windows-2019)	10m 7s
b2-windows (windows-2022)	26m 2s
cmake-install-posix (ubuntu-22.04)	5m 12s
b2-posix (macos-14)	11m 37s
cmake-install-windows (windows-2022)	8m 26s
cmake-install-posix (macos-12)	11m 36s
cmake-install-posix (macos-13)	9m 10s
cmake-test-posix (ubuntu-latest)	32m 31s
cmake-install-posix (macos-14)	6m 23s
cmake-test-posix-quick (ubuntu-20.04)	3m 23s
cmake-test-posix-quick (ubuntu-22.04)	1m 54s
cmake-test-windows-quick (windows-2019)	6m 34s
cmake-test-posix-quick (macos-12)	7m 26s
cmake-test-posix-quick (macos-13)	7m 10s
cmake-test-posix-quick (macos-14)	4m 57s
cmake-test-windows-quick (windows-2022)	5m 9s
	4h 14m 11s

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