fix: fix 'deprecated-method' for pylint

.pylintrc

@@ -13,7 +13,6 @@ disable=fixme,
         consider-using-get,
         consider-using-set-comprehension,
         dangerous-default-value,
-        deprecated-method,
         duplicate-code,
         implicit-str-concat,
         import-outside-toplevel,

src/wuttaweb/grids/filters.py

@@ -358,7 +358,7 @@ class GridFilter:  # pylint: disable=too-many-instance-attributes
             verb = self.verb
         if not verb:
             verb = self.get_default_verb()
-            log.warn(
+            log.warning(
                 "missing verb for '%s' filter, will use default verb: %s",
                 self.key,
                 verb,