Bump actions/upload-artifact from 5 to 7 #2315

Job	Run time
should run ci	6s
cache-pixi-lock	1m 34s
build-and-upload-nightly-parcels	1m 30s
Unit tests: ubuntu \| pixi run -e test-minimum tests	3m 59s
Unit tests: ubuntu \| pixi run -e test tests	3m 12s
Unit tests: ubuntu \| pixi run -e test-py311 tests	4m 9s
Unit tests: ubuntu \| pixi run -e test-py313 tests	3m 51s
Unit tests: windows \| pixi run -e test tests	7m 14s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	0s
TypeChecking: pixi run typing	-1s
merge-test-artifacts	-1s
	25m 33s

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