Bump lodash from 4.17.20 to 4.17.21 (librenms#12848)

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.20 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.20...4.17.21)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -17,7 +17,7 @@
         "cross-env": "^5.2.1",
         "jquery": "^3.5.1",
         "laravel-mix": "^6.0.6",
-        "lodash": "^4.17.20",
+        "lodash": "^4.17.21",
         "popper.js": "^1.16.1",
         "postcss": "^8.2.2",
         "resolve-url-loader": "^3.1.2",