Bump lodash from 4.17.19 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.19 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.19...4.17.21)

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

Author: dependabot[bot]

package-lock.json

@@ -26,7 +26,7 @@
   },
   "dependencies": {
     "jquery": "^3.5.0",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "popper.js": "^1.16.1"
   }
 }