Add Conda build Pixi task #2324

Job	Run time
should run ci	10s
cache-pixi-lock	1m 30s
Unit tests: ubuntu \| pixi run -e test-minimum tests	3m 55s
Unit tests: ubuntu \| pixi run -e test-py311 tests	4m 18s
Unit tests: ubuntu \| pixi run -e test-py313 tests	3m 57s
Unit tests: ubuntu \| pixi run -e test tests	2m 59s
Unit tests: windows \| pixi run -e test tests	6m 2s
build-and-upload-nightly-parcels	1m 13s
TypeChecking: pixi run typing	0s
Integration: ${{ matrix.os }} \| pixi run -e ${{ matrix.pixi-environment }} tests-notebooks	0s
merge-test-artifacts	0s
	24m 4s

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