Bump @salesforce-ux/design-system from 2.2.1 to 2.11.2

Bumps [@salesforce-ux/design-system](https://github.com/salesforce-ux/design-system) from 2.2.1 to 2.11.2.
- [Release notes](https://github.com/salesforce-ux/design-system/releases)
- [Changelog](https://github.com/salesforce-ux/design-system/blob/master/RELEASENOTES.LEGACY.md)
- [Commits](salesforce-ux/design-system@v2.2.1...v2.11.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -43,7 +43,7 @@
   },
   "homepage": "https://github.com/2fd/graphdoc#readme",
   "devDependencies": {
-    "@salesforce-ux/design-system": "2.2.1",
+    "@salesforce-ux/design-system": "2.11.2",
     "@types/bluebird": "^3.0.37",
     "@types/chai": "^3.4.34",
     "@types/fs-extra": "0.0.32",