fix: Add file-saver dep

Author: Bernie Zang

package.json

@@ -53,8 +53,8 @@
     "@ciscospark/helper-html": "1.9.3",
     "@ciscospark/internal-plugin-conversation": "1.9.4",
     "@ciscospark/internal-plugin-encryption": "1.9.4",
-    "@ciscospark/internal-plugin-flag": "1.9.4",
     "@ciscospark/internal-plugin-feature": "1.9.4",
+    "@ciscospark/internal-plugin-flag": "1.9.4",
     "@ciscospark/internal-plugin-mercury": "1.9.4",
     "@ciscospark/internal-plugin-metrics": "1.9.4",
     "@ciscospark/internal-plugin-user": "1.9.4",
@@ -68,6 +68,7 @@
     "classnames": "^2.2.5",
     "core-decorators": "^0.19.0",
     "custom-event-polyfill": "^0.3.0",
+    "file-saver": "^1.3.3",
     "highlight.js": "^9.12.0",
     "howler": "^2.0.2",
     "immutable": "^3.8.1",