Revert "[test_OMCPath] only for Python >= 3.12"

This reverts commit 0936170.

Author: syntron

tests/test_OMCPath.py

@@ -7,14 +7,8 @@
     reason="OpenModelica Docker image is Linux-only; skipping on Windows.",
 )
 
-skip_python_older_312 = pytest.mark.skipif(
-    sys.version_info < (3, 12),
-    reason="OMCPath only working for Python >= 3.12 (definition of pathlib.PurePath).",
-)
-
 
 @skip_on_windows
-@skip_python_older_312
 def test_OMCPath_docker():
     omcp = OMPython.OMCProcessDocker(docker="openmodelica/openmodelica:v1.25.0-minimal")
     om = OMPython.OMCSessionZMQ(omc_process=omcp)
@@ -40,7 +34,6 @@ def test_OMCPath_docker():
     del om
 
 
-@skip_python_older_312
 def test_OMCPath_local():
     om = OMPython.OMCSessionZMQ()