Import the module to get it's version

Signed-off-by: Pedro Algarvio <palgarvio@vmware.com>

Author: s0undt3ch

noxfile.py

@@ -414,8 +414,9 @@ def changelog(session, draft):
 
     version = session.run(
         "python",
-        "setup.py",
-        "--version",
+        "-c",
+        'import os,sys; sys.path.insert(0, "src/"); import pytestskipmarkers; '
+        "print(pytestskipmarkers.__version__, file=sys.stdout, flush=True);",
         silent=True,
         log=False,
         stderr=None,