WIP: [ci] fix conda activation issues (fixes #6799) #9564

Job	Run time
r-package (clang16, R-devel)	12m 29s
r-package (ubuntu-latest, gcc, R 4.3, cmake)	8m 59s
r-package (clang17, R-devel)	11m 55s
r-package (ubuntu-latest, clang, R 4.3, cmake)	9m 8s
r-package (clang18, R-devel)	11m 36s
r-package (macos-13, gcc, R 4.3, cmake)	8m 59s
r-package (clang19, R-devel)	11m 47s
r-package (macos-13, clang, R 4.3, cmake)	11m 3s
r-sanitizers (ubuntu-latest, R-devel, gcc ASAN/UBSAN)	15m 26s
r-package (gcc14, R-devel)	10m 40s
r-package (windows-latest, MINGW, R 3.6, cmake)	11m 38s
r-sanitizers (ubuntu-latest, R-devel, clang ASAN/UBSAN)	29m 28s
r-package (intel, R-devel)	12m 0s
r-package (windows-latest, MINGW, R 4.3, cmake)	13m 2s
r-package (rchk, R-devel)	14m 39s
r-package (windows-2019, MSVC, R 3.6, cmake)	25m 22s
r-package (windows-2022, MSVC, R 4.3, cmake)	24m 37s
r-package (windows-latest, MINGW, R 3.6, cran)	12m 25s
r-package (windows-latest, MINGW, R 4.3, cran)	14m 28s
r-package (ubuntu-latest, gcc, R 4.3, cran)	10m 6s
r-package (macos-13, clang, R 4.3, cran)	15m 13s
r-package (macos-14, clang, R 4.3, cran)	6m 3s
all-r-package-jobs-successful	1s
	5h 1m 4s

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