Bump version to 1.25.0

[tianleiwu]

Description

Increase version number to 1.25.0.

This may need update after we cherry-pick API changes to rel-1.24.0 so that we know the exact boundary of APIs.

[edgchen1]

there's also OrtEpApi. do we need to add a similar static_assert there?

onnxruntime/onnxruntime/core/session/plugin_ep/ep_api.cc

Lines 870 to 877 in 4013dc1

	&OrtExecutionProviderApi::GetEnvConfigEntries,
	};
	// checks that we don't violate the rule that the functions must remain in the slots they were originally assigned
	static_assert(offsetof(OrtEpApi, ReleaseEpDevice) / sizeof(void*) == 1,
	"Size of version 22 API cannot change"); // initial version in ORT 1.22
	static_assert(offsetof(OrtEpApi, GetSyncIdForLastWaitOnSyncStream) / sizeof(void*) == 15,
	"Size of version 23 API cannot change");