Update dynamic_bitset from develop #2861

Job	Run time
cmake-install-windows (windows-2019)	8m 25s
cmake-install-windows (windows-2022)	9m 0s
b2-posix (ubuntu-20.04)	12m 42s
b2-windows (windows-2019)	29m 31s
b2-posix (ubuntu-22.04)	12m 42s
b2-windows (windows-2022)	29m 30s
cmake-install-posix (ubuntu-20.04)	4m 42s
b2-posix (ubuntu-24.04)	14m 55s
cmake-test-posix (ubuntu-latest)	48m 41s
b2-posix (macos-13)	29m 38s
cmake-install-posix (ubuntu-22.04)	4m 39s
b2-posix (macos-14)	12m 33s
cmake-install-posix (ubuntu-24.04)	6m 19s
cmake-test-posix-quick (ubuntu-20.04)	2m 43s
b2-posix (macos-15)	11m 59s
cmake-test-windows-quick (windows-2019)	6m 27s
cmake-install-posix (macos-13)	10m 1s
cmake-test-posix-quick (ubuntu-22.04)	2m 34s
cmake-test-windows-quick (windows-2022)	4m 54s
cmake-install-posix (macos-14)	5m 9s
cmake-install-posix (macos-15)	6m 16s
cmake-test-posix-quick (ubuntu-24.04)	2m 6s
cmake-test-posix-quick (macos-13)	6m 42s
cmake-test-posix-quick (macos-14)	3m 38s
cmake-test-posix-quick (macos-15)	4m 3s
	4h 49m 49s

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