ISTWCMS-5100: Update to ckeditorheight 8.x-1.8

Not installed by default.

composer.json

@@ -21,7 +21,7 @@
         "drupal/block_list_override": "1.0.1",
         "drupal/cancel_button": "dev-1.2-uw_wcms1",
         "drupal/captcha": "1.2",
-        "drupal/ckeditorheight": "1.5",
+        "drupal/ckeditorheight": "1.8",
         "drupal/components": "2.4",
         "drupal/composer_deploy": "1.6",
         "drupal/conditional_fields": "4.0.0-alpha1",