Update addons-linter to 0.22.3

package.json

@@ -10,7 +10,7 @@
     "potools": "potools"
   },
   "dependencies": {
-    "addons-linter": "0.22.2",
+    "addons-linter": "0.22.3",
     "clean-css": "4.1.3",
     "clean-css-cli": "4.1.5",
     "jqmodal": "1.4.2",

src/olympia/devhub/tests/test_tasks.py

@@ -438,7 +438,7 @@ class TestRunAddonsLinter(ValidatorTestCase):
 
             assert tmpf.call_count == 2
             assert result['success']
-            assert result['warnings'] == 22
+            assert result['warnings'] == 21
             assert not result['errors']