Update pyodide pinning from 0.27.7 to 0.28.3

[mjp0]

Describe the solution

Please update pyodine pinning because packages relying on xxhash >3.5.0 fails due to 0.27.7 having only 3.4.x in the index. Pyodide 0.28.3 has xxhash 3.5.0.