Update dependency cesium to v1.91.0

Author: renovate-bot

Diff for: ember/package.json

@@ -18,7 +18,7 @@
     "test": "ember test"
   },
   "dependencies": {
-    "cesium": "1.74.0",
+    "cesium": "1.91.0",
     "ol": "5.3.3",
     "olcs": "2.12.0",
     "remarkable": "2.0.1",

Diff for: ember/yarn.lock

@@ -4677,10 +4677,10 @@ center-align@^0.1.1:
     align-text "^0.1.3"
     lazy-cache "^1.0.3"
 
-cesium@1.74.0:
-  version "1.74.0"
-  resolved "https://registry.yarnpkg.com/cesium/-/cesium-1.74.0.tgz#79038abd40eb3e3a3223162d0984daf6d09496fb"
-  integrity sha512-PwHOz4nF9SUYrEo3Bcz0V7ebsB1XWqRkBkMWkn4BduBxNEzH8QdJ7ipuuNu8KZHfy3a1H2cOrwD8y8TikYmO8Q==
+cesium@1.91.0:
+  version "1.91.0"
+  resolved "https://registry.yarnpkg.com/cesium/-/cesium-1.91.0.tgz#3b901913b5dca286406227d588617697ee3b6afc"
+  integrity sha512-HCwwYq7+qqB8c9ydz51luX1KP/apMiMVA8UAu8C7V2SOANUjOZQSi3CcXAtXXn1oUZQDrJlBs6sBT9nt0zRRLg==
 
 chalk@^1.0.0, chalk@^1.1.1, chalk@^1.1.3:
   version "1.1.3"