Bump occt to 7.9.3 and swig to 4.4.1

Improve ShapeTesselator

The TopoDS_Shape output typemaps were using direct return statements
(Py_RETURN_NONE and return resultobj) which bypassed SWIG's cleanup
code for input arguments. This caused memory leaks when functions
taking std::string parameters returned TopoDS_Shape, as the temporary
std::string objects were never freed.

Changed to use $result assignment instead of direct returns, allowing
SWIG to generate proper freearg cleanup code that calls
"if (SWIG_IsNewObj(res)) delete arg" for temporary std::string objects.

- Bump C++ standard from C++14 to C++17
- Add sysroot_linux-64 >= 2.28 for conda Linux builds (fixes timespec_get with GCC 15)
- Add support for Python 3.13 and 3.14
- Fix OpenGL include path and guard Addons behind visualization check
- Fix dylib warnings on macOS 10.13
- Fix installation directory discovery for py3.13
- Replace swig_link_libraries with target_link_libraries
- Install GUI test dependencies on Windows only

Review/cmake fixes

Replace std::ostringstream with std::to_chars + pre-reserved std::string
in export functions (~37% faster). Use std::memcpy for bulk float copies
in GetVertices/NormalsAsTuple (~23% faster) and JoinPrimitives. Skip
identity transforms in ProcessSingleFace. Store Face/Edge by value
instead of unique_ptr to eliminate per-face heap allocation. Remove
redundant reserve() before resize() calls. Add [[nodiscard]] on getters.
Remove unused includes (memory, tuple, sstream, iomanip, numeric, mutex).

std::to_chars for floating point is unavailable on macOS with older
SDKs (requires macOS 13.3+), breaking conda-forge builds.

Fixes tpaviot#1488

…version-in-pkgbase__init__py

Fixed incorrect reported package version

Prepare bump-my-version support