Update to use pandas v2.* #859

Job	Run time
linux-64-py3.10	10m 33s
Standard 2-Zone Example (SANDAG)	6m 45s
Estimation Mode Unit Tests	21m 17s
random_seed_generation_test	8m 2s
placeholder_psrc	48m 8s
win-64	16m 32s
Standard 1-Zone Example (MTC)	25m 21s
prototype_marin	6m 49s
prototype_mtc	54m 55s
prototype_sandag_xborder	9m 48s
prototype_mtc_extended	1h 34m 29s
placeholder_sandag	2h 19m 7s
prototype_mwcog	52m 45s
placeholder_multiple_zone	13m 20s
macOS	7m 16s
production_semcog	10m 17s
develop-docbuild	0s
	8h 45m 24s

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