Upgrade pillow to 5.4.1 (#19958)

homeassistant/components/image_processing/tensorflow.py

@@ -20,7 +20,7 @@ from homeassistant.core import split_entity_id
 from homeassistant.helpers import template
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['numpy==1.15.4', 'pillow==5.3.0', 'protobuf==3.6.1']
+REQUIREMENTS = ['numpy==1.15.4', 'pillow==5.4.1', 'protobuf==3.6.1']
 
 _LOGGER = logging.getLogger(__name__)