Bump lodash from 4.17.20 to 4.17.21

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

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

package.json

@@ -21,7 +21,7 @@
     "@types/node": "^15.0.1",
     "a17t": "^0.4.0",
     "esbuild": "^0.8.57",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "mjml": "^4.8.0",
     "remixicon": "^2.5.0",
     "remove-markdown": "^0.3.0",