Bump lodash from 4.17.20 to 4.17.21 in /frontend (#49)

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>

Author: dependabot[bot]

frontend/package-lock.json

@@ -34,7 +34,7 @@
     "core-js": "3.6.5",
     "date-fns": "2.16.1",
     "hash-it": "4.0.5",
-    "lodash": "4.17.20",
+    "lodash": "4.17.21",
     "messageformat": "^2.3.0",
     "ngx-mat-select-search": "3.2.0",
     "ngx-monaco-editor": "9.0.0",