Fix CI

Author: KoolADE85

tests/test_cell_data_type_override.py

@@ -16,6 +16,7 @@
 def test_cd001_cell_data_types_override(dash_duo):
     os.environ['LANGUAGE'] = 'en-US'
     chrome_options = Options()
+    chrome_options.add_argument("--headless")
     driver = webdriver.Chrome(options=chrome_options) # run this test with a Chrome driver to control the locale
 
     app = Dash(__name__)