Enable system TBB discovery on Windows when no explicit third-party
installation is selected. Support MinGW FreeType import libraries and
versioned runtime DLLs.
Preserve imported CMake targets during CSF processing and validate
MSYS2 GCC and Clang dependency artifacts in master validation.
- Updates `actions/checkout` from v4.1.7 to v4.2.2 across all workflows
- Updates `actions/upload-artifact` from v4.4.3 to v4.6.2 across all custom actions
- Updates `actions/download-artifact` from v4.1.7/v4.1.8 to v4.3.0 across all custom actions
- Wrap deprecated FFmpeg calls in MSVC warning push/pop pragmas in two source files
- Introduce `.github/workflows/master-validation.yml` and remove several old workflows
- Broadened `if` conditions in `daily-ir-vcpkg-configure.yml` and updated macOS brew deps