Bump nushell version to 0.104 #36

Job	Run time
Build Nushell from `main`	2m 59s
Test Plugin: nu_plugin_nu_example	10s
Test Plugin: nu_plugin_custom_values	8s
Test Plugin: nu_plugin_python_example	7s
Test Plugin: nu_plugin_example	8s
Test Plugin: nu_plugin_node_example	7s
	3m 39s

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