Apply database updates

config/block_class.settings.yml

@@ -4,7 +4,10 @@ langcode: en
 maxlength_block_class_field: 255
 field_type: multiple_textfields
 default_case: standard
-block_classes_stored: '{"image":"image","is-fullwidth":"is-fullwidth","purge-child-class":"purge-child-class"}'
+block_classes_stored:
+  - image
+  - is-fullwidth
+  - purge-child-class
 enable_attributes: true
 enable_auto_complete: true
 qty_classes_per_block: 10
@@ -16,7 +19,7 @@ weight_attributes: 0
 weight_class: 0
 weight_id: 0
 filter_html_clean_css_identifier: ''
-maxlength_attributes: 0
+maxlength_attributes: 255
 maxlength_id: 255
 attribute_keys_stored: '[]'
 attribute_value_stored: '[]'