[ENH] add caching action for elephant-data #942

Job	Run time
test-conda (3.11, ubuntu-latest)	12m 0s
test-conda (3.11, ubuntu-latest)	6m 8s
docs (ubuntu-latest)	8m 31s
docs (ubuntu-latest)	6m 36s
build-and-test-pip (3.9, ubuntu-latest)	8m 46s
build-and-test-pip (3.9, ubuntu-latest)	5m 10s
doctests (3.10, ubuntu-latest)	3m 55s
doctests (3.10, ubuntu-latest)	34s
build-and-test-pip (3.10, ubuntu-latest)	8m 32s
build-and-test-pip (3.10, ubuntu-latest)	4m 56s
build-and-test-pip (3.11, ubuntu-latest)	10m 32s
build-and-test-pip (3.11, ubuntu-latest)	4m 41s
test-pip (3.11, windows-latest)	11m 9s
test-pip (3.11, windows-latest)	11m 1s
conda (3.11, macos-12)	17m 32s
conda (3.11, macos-12)	9m 42s
build-and-test-pip (3.12, ubuntu-latest)	10m 27s
build-and-test-pip (3.12, ubuntu-latest)	5m 15s
test-pip-MPI (3.9, ubuntu-latest)	10m 17s
test-pip-MPI (3.9, ubuntu-latest)	5m 42s
conda (3.11, macos-13)	17m 26s
conda (3.11, macos-13)	12m 37s
	3h 11m 29s

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