Update doc/model/index.rst #3151

Job	Run time
Test Python (1, 3.9)	30m 29s
Test Python (1, 3.12)	38m 23s
Test Python (2, 3.9)	28m 57s
Test Python (2, 3.12)	38m 54s
Test Python (3, 3.9)	30m 18s
Test Python (3, 3.12)	42m 46s
Test Python (4, 3.9)	30m 45s
Test Python (4, 3.12)	39m 1s
Test Python (5, 3.9)	29m 56s
Test Python (5, 3.12)	41m 37s
Test Python (6, 3.9)	29m 32s
Test Python (6, 3.12)	40m 46s
Combine and update integration test durations (3.9)	16s
Combine and update integration test durations (3.12)	44s
Pass testing Python	2s
	7h 2m 26s

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