[3.10] bpo-45382: test.pythoninfo logs more Windows versions (GH-30891)

Add the following info to test.pythoninfo:

* windows.ver: output of the shell "ver" command
* windows.version and windows.version_caption: output of the
  "wmic os get Caption,Version /value" command.

(cherry picked from commit b0898f4aa90d9397e23aef98a2d6b82445ee7455)

* bpo-45382: test.pythoninfo: set wmic.exe encoding to OEM (GH-30890)

(cherry picked from commit cef0a5458f254c2f8536b928dee25862ca90ffa6)