CI: Harden GHA configuration #243

Job	Run time
Build sdist	27s
Build data (basemap_data)	37s
Build data (basemap_data_hires)	47s
Build wheels (macos-13)	12m 5s
Build wheels (macos-14)	5m 57s
Build wheels (ubuntu-22.04)	6m 49s
Build wheels (windows-2022)	12m 7s
Check packages	15s
Build docs	8m 3s
Upload packages	0s
Deploy docs	0s
	47m 7s

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