fix(setup): use the proper constant for package for the program name

setup.py will probably be refactored in the near future and only be kept
for compatibility with cachito. While this refactor doesn't happen, we
should at least keep it working.

setup.py

@@ -6,13 +6,20 @@
 
 from setuptools import find_packages, setup
 
-from qpc.release import AUTHOR, AUTHOR_EMAIL, ENTRYPOINT, PKG_NAME, URL, VERSION
+from qpc.release import (
+    AUTHOR,
+    AUTHOR_EMAIL,
+    ENTRYPOINT,
+    QPC_VAR_PROGRAM_NAME,
+    URL,
+    VERSION,
+)
 
 BASE_QPC_DIR = Path(__file__).absolute().parent
 sys.path.insert(0, BASE_QPC_DIR / "qpc")
 
 setup(
-    name=PKG_NAME,
+    name=QPC_VAR_PROGRAM_NAME,
     version=VERSION,
     author=AUTHOR,
     author_email=AUTHOR_EMAIL,