Revert to using `branch-23.08` GHA workflows #214

Job	Run time
checks / other-checks	45s
checks / check-style	1m 31s
conda-cpp-build / compute-matrix	3s
conda-cpp-build / build (11.8.0, ubuntu22.04, amd64, 3.10)	4m 16s
conda-cpp-build / build (11.8.0, ubuntu22.04, arm64, 3.10)	3m 5s
conda-cpp-build / build (12.0.1, ubuntu22.04, amd64, 3.10)	4m 2s
conda-python-build	0s
conda-python-tests	0s
docs-build	0s
pr-builder	0s
	13m 42s

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