fix: superset-frontend/temporary_superset_ui/superset-ui-plugins-deck…

…gl/packages/superset-ui-plugins-demo/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1045326

superset-frontend/temporary_superset_ui/superset-ui-plugins-deckgl/packages/superset-ui-plugins-demo/package.json

@@ -36,14 +36,14 @@
     "@storybook/addon-knobs": "^5.0.9",
     "@storybook/addon-links": "^5.0.9",
     "@storybook/addons": "^5.0.9",
-    "@storybook/react": "^5.0.9",
+    "@storybook/react": "^6.1.0",
     "@types/react": "^16.9.49",
     "@types/storybook__react": "3.0.7",
     "bootstrap": "^4.3.1",
     "react": "^16.6.0",
     "react-bootstrap": "^0.33.1",
     "react-loadable": "^5.5.0",
-    "storybook-addon-jsx": "^7.1.0"
+    "storybook-addon-jsx": "^7.2.1"
   },
   "devDependencies": {
     "@babel/core": "^7.4.3",