Add temporary llvmlite pin for possibly clear resolver error #2059

Job	Run time
checks / check-style	1m 50s
checks / other-checks	34s
devcontainer / build (amd64, 12.5, conda)	5m 16s
devcontainer / build (amd64, 12.5, pip)	9m 17s
wheel-build-cuspatial	0s
conda-cpp-build	0s
wheel-build-cuproj	0s
wheel-tests-cuspatial	0s
conda-cpp-checks	0s
conda-cpp-tests	0s
conda-python-build	0s
wheel-tests-cuproj	0s
docs-build	0s
conda-notebook-tests	0s
conda-python-tests	0s
pr-builder	1s
	16m 58s

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