Extend valid types for PyROS solver argument `uncertain_params` #5937

Job	Run time
lint/style-and-typos	47s
linux/3.8/bare-env	0s
${{ matrix.TARGET }}/${{ matrix.python }}${{ matrix.other }}	0s
process-coverage-linux	19s
process-coverage-osx	31s
process-coverage-win	43s
	2m 20s

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