Update pull.yml to test snapshot saving and loading (CPU-only)(#1486) #2531

Job	Run time
test-advanced-mps-macos / macos-job	6m 40s
test-gguf-mps-macos / macos-job	6m 41s
test-evaluation-mps-macos / macos-job	6m 32s
test-multimodal-mps-macos / macos-job	38s
test-readme-mps-macos / macos-job	1m 41s
test-native-mps-macos / macos-job	1m 35s
test-quantization-mps-macos / macos-job	39m 0s
	1h 2m 47s

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