Tests

Bump readthedocs build image #1429

Job	Run time
test-zarr (316, zarr==3.1.6)	1m 30s
test-crc32c (google-crc32c, google_crc32c)	1m 38s
test-crc32c (no-crc32c)	1m 31s
test-crc32c (crc32c, crc32c)	1m 40s
test-zarr (308, zarr==3.0.8)	1m 32s
test-zarr (main, zarr @ git+https://github.com/zarr-developers/zarr-python.git@main)	1m 39s
build (3.12, ubuntu-latest)	1m 46s
build (3.12, ubuntu-22.04-arm)	1m 33s
build (3.14, windows-latest)	4m 28s
build (3.14, macos-14)	1m 37s
build (3.13, ubuntu-22.04-arm)	1m 33s
build (3.14, ubuntu-22.04-arm)	1m 31s
build (3.12, macos-15-large)	3m 10s
build (3.14, ubuntu-latest)	1m 43s
build (3.13, macos-15-large)	3m 42s
build (3.13, macos-14)	1m 31s
build (3.13, ubuntu-latest)	1m 38s
build (3.14, macos-15-large)	2m 57s
build (3.12, macos-14)	2m 33s
build (3.12, windows-latest)	4m 14s
build (3.13, windows-latest)	4m 10s
	47m 36s

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