Corrected Logger case to logger in error condition (#438)

In a less used conditional case, self.Logger was referenced, whereas in the rest of the file self.logger is used. Resulted in an exception.

edk2toollib/uefi/edk2/path_utilities.py

@@ -108,11 +108,11 @@ def __init__(self, ws: str, package_path_list: Iterable[str],
         if "PYTOOL_TEMPORARILY_IGNORE_NESTED_EDK_PACKAGES" in os.environ:
             warning = "PYTOOL_TEMPORARILY_IGNORE_NESTED_EDK_PACKAGES is no longer used by edk2-pytool-library, but is "\
                       "detected in your environment. Please remove this environment variable."
-            self.Logger.log(logging.WARNING, warning)
+            self.logger.log(logging.WARNING, warning)
         if "PYTOOL_IGNORE_KNOWN_BAD_NESTED_PACKAGES" == os.environ:
             warning = "PYTOOL_IGNORE_KNOWN_BAD_NESTED_PACKAGES is no longer used by edk2-pytool-library, but is " \
                       "detected in your environment. Please remove this environment variable."
-            self.Logger.log(logging.WARNING, warning)
+            self.logger.log(logging.WARNING, warning)
 
         package_path_packages = {}
         for package_path in self._package_path_list: