<yvals_core.h>: Update _MSVC_STL_UPDATE to May 2025 and update _MSVC_STL_VERSION to 145

[StephanTLavavej]

Explanation on our wiki: Macro _MSVC_STL_UPDATE

Code:

STL/stl/inc/yvals_core.h

Lines 909 to 910 in 8e9f4ee

	#define _MSVC_STL_VERSION 143
	#define _MSVC_STL_UPDATE 202504L

⚠️ Special for this month! We're beginning work on Visual Studio 18, whose toolset will identify itself as "v145" (long story), so _MSVC_STL_VERSION also needs to be updated from 143 to 145.

Previous issue: #5384

This issue is intended for a new contributor (especially one new to GitHub) to get started with the simplest possible change.

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