bump development version to 4.3.0.99 #7829

Job	Run time
r-package (debian, R-devel, clang-16)	15m 27s
r-sanitizers (ubuntu-latest, R-devel, gcc ASAN/UBSAN)	14m 43s
r-package (ubuntu-latest, gcc, R 3.6, cmake)	8m 15s
r-package (debian, R-devel, clang-17)	15m 49s
r-sanitizers (ubuntu-latest, R-devel, clang ASAN/UBSAN)	30m 3s
r-package (ubuntu-latest, gcc, R 4.3, cmake)	8m 41s
r-package (debian, R-devel, clang-18)	15m 27s
r-package (ubuntu-latest, clang, R 3.6, cmake)	8m 41s
r-package (ubuntu-latest, clang, R 4.3, cmake)	8m 52s
r-package (macOS-latest, gcc, R 4.3, cmake)	11m 27s
r-package (macOS-latest, clang, R 4.3, cmake)	18m 51s
r-package (windows-latest, MINGW, R 3.6, cmake)	15m 41s
r-package (windows-latest, MINGW, R 4.3, cmake)	18m 27s
r-package (windows-2019, MSVC, R 3.6, cmake)	16m 2s
r-package (windows-2022, MSVC, R 4.3, cmake)	17m 25s
r-package (windows-latest, MINGW, R 3.6, cran)	20m 40s
r-package (windows-latest, MINGW, R 4.3, cran)	20m 50s
r-package (ubuntu-latest, gcc, R 4.3, cran)	15m 9s
r-package (macOS-latest, clang, R 4.3, cran)	18m 35s
r-rchk (ubuntu-latest, gcc, R 4.3, cran)	8m 52s
all-r-package-jobs-successful	2s
	5h 7m 59s

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