CI: Update test results and build GitHub workflow for Windows

[jarzec]

• Updates test result files omitted in the recent updates.
  • Makes all the LInux/MacOS tests pass.
  • Windows tests started to fail after the MSVC update from 19.43.34808 to 19.44.35209 on GitHub.
  • The commit 5aa32ae:
    • had all the tests passing with 19.43.34808 in this build (from May 14),
    • but has failures building cppfront with 19.44.35209 in this build (from July 8)
• The new version of the MSVC raises a deprecation warning concerning the -experimental:module option used in .github/workflows/build-cppfront.yaml.
  • The following deprecation message is shown by MSVC 19.44.35209 (see e.g. this build of f7a2af8 from July 6):

    The '/experimental:module' option is deprecated. The core language Modules
    facility is available with '/std:c++20' or higher, allowing 'import std;' to be
    used. See: https://aka.ms/import-std
    

  • The PR removes the deprecated option.

The source of compilation issues with the newer MSVC version requires further investigation.