debian: update changelog for bookworm-backports release 1.47.1~rc2-1~… #114

Job	Run time
Build and test with ASAN enabled	1m 38s
Cross-compile for Android (aarch64)	38s
Build and test with clang	1m 24s
Cross-compile for Android (armv7a)	37s
Cross-compile for Android (i686)	33s
Build and test with gcc	55s
Cross-compile for Android (x86_64)	39s
Build and test with gcc -m32	1m 12s
Build and test on macOS	1m 21s
Build and test with UBSAN enabled	1m 24s
Build mke2fs on Windows with mingw32	2m 11s
Build mke2fs on Windows with mingw64	2m 5s
	14m 37s

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