Add debug log for platform_version check

I was running an actions/setup-python in an unsupported container and was baffled by some of the debug logging.

[Publish latest development version/pdf]   💬  ::debug::check 3.9.13 satisfies 3.9
[Publish latest development version/pdf]   💬  ::debug::x64===x64 && darwin===linux
[Publish latest development version/pdf]   💬  ::debug::x64===x64 && linux===linux
[Publish latest development version/pdf]   💬  ::debug::x64===x64 && linux===linux
[Publish latest development version/pdf]   💬  ::debug::x64===x64 && linux===linux
[Publish latest development version/pdf]   💬  ::debug::x64===x64 && win32===linux
[Publish latest development version/pdf]   💬  ::debug::x86===x64 && win32===linux

The logging very helpfully logs which versions it is checking
https://github.com/actions/toolkit/blob/e1a7863be630ea22c506f848a0762cb17e0534f8/packages/tool-cache/src/manifest.ts#L77-L99

But skips this logging in for the platform_version check, which I fully expect to be failing in my case.
https://github.com/actions/toolkit/blob/e1a7863be630ea22c506f848a0762cb17e0534f8/packages/tool-cache/src/manifest.ts#L91

I'd be willing to take this up myself, if this is indeed considered a bug

Start in packages/tool-cache/src/manifest.ts, reading the debug logging around lines 77-99 and the platform_version check at line 91. Confirm how the existing version checks are logged, then make the platform_version comparison equally visible and verify that debug output identifies the versions being checked.