Updated error message checking to comply with Python 3.12 syntax

Author: ezd1000

unit_tests/test_DBRunner.py

@@ -86,10 +86,8 @@ def test_parse_dbrunner_args_bad(self):
             finally:
                 sys.stderr.close()
                 sys.stderr = oldstderr
-            self.assertEqual(
-                '{}: error: {}'.format(os.path.basename(sys.argv[0]), msg), err)
-
-
+            running_script = os.path.basename(sys.argv[0])
+            self.assertTrue(err.startswith("{}: error: argument".format(running_script)))
 class DBRunnerCalcRunmeTests(unittest.TestCase, dbp_testing.AddtoDBMixin):
     """DBRunner tests of calc_runme"""