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)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -66,7 +66,7 @@
     "jed": "^1.1.1",
     "less": "^3.7.1",
     "less-loader": "^4.1.0",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "node-sass": "^4.13.1",
     "npm": "^6.2.0",
     "optimize-css-assets-webpack-plugin": "^5.0.0",
@@ -94,7 +94,7 @@
     "classnames": "^2.2.6",
     "fullcalendar": "3.6.2",
     "jquery-timepicker": "^1.3.3",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "moment": "^2.19.1",
     "moment-timezone": "^0.5.13",
     "nprogress": "^0.2.0",