pylint: Fix use-list-literal

Pylint 2.10 introduced new checker:
> Emitted when using list() to create an empty list instead of the
  literal []. The literal is faster as it avoids an additional function
  call.

See pylint-dev/pylint#4365

Fixes: fleet-commander#279
Signed-off-by: Stanislav Levin <slev@altlinux.org>

logger/fleet_commander_logger.py

@@ -1009,7 +1009,7 @@ def parse_bookmarks_tree(self, path, leaf):
         if leaf["type"] == "url":
             logger.debug("Parsing bookmarks leaf %s", leaf["name"])
             return [json.dumps([path, leaf["id"], leaf["url"], leaf["name"]])]
-        return list()
+        return []
 
     def get_modified_bookmarks(self, bmarks1, bmarks2):
         diff = bmarks2[:]