Bump lodash from 4.17.13 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.13 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.13...4.17.21)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -9,7 +9,7 @@
   "dependencies": {
     "handlebars": "1.3.0",
     "jquery": "2.1.0",
-    "lodash": "4.17.13",
+    "lodash": "4.17.21",
     "requirejs": "2.1.11"
   },
   "devDependencies": {