Bump lodash from 4.17.15 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.15 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.15...4.17.21)

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

Author: dependabot[bot]

package-lock.json

@@ -593,7 +593,7 @@
     "clipboardy": "^2.1.0",
     "entities": "^2.0.0",
     "jwt-decode": "^2.2.0",
-    "lodash": "^4.17.20",
+    "lodash": "^4.17.21",
     "lorem-ipsum": "^2.0.3",
     "moment-timezone": "^0.5.27",
     "numeral": "^2.0.6",