Bump mymindstorm/setup-emsdk from 14 to 16 #313

Job	Run time
Windows - Python 3.11 with minimal dependencies	1m 43s
macOS - Python 3.11 with all optional dependencies	1m 2s
Python 3.10 with oldest supported version of all dependencies	40s
Python 3.10 with minimal dependencies	39s
Python 3.12 with all optional dependencies and pre-releases	1m 7s
Python 3.13 with latest dev versions of key dependencies	1m 37s
Python 3.11 with all optional dependencies and coverage checking	1m 15s
	8m 3s

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