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)

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

Author: dependabot[bot]

package.json

@@ -58,7 +58,7 @@
         "isomorphic-fetch": "^2.2.1",
         "json2csv": "^4.5.2",
         "jsonwebtoken": "^8.5.1",
-        "lodash": "^4.17.19",
+        "lodash": "^4.17.21",
         "mailchimp-api-v3": "^1.13.1",
         "mailgun.js": "^3.5.9",
         "mandrill-api": "^1.0.45",

yarn.lock

@@ -5018,10 +5018,10 @@ lodash.unset@^4.5.2:
   resolved "https://registry.npmjs.org/lodash.unset/-/lodash.unset-4.5.2.tgz"
   integrity sha1-Nw0dPoW3Kn4bDN8tJyEhMG8j5O0=
 
-lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.19, lodash@^4.17.3, lodash@^4.17.4:
-  version "4.17.19"
-  resolved "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz"
-  integrity sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==
+lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.21, lodash@^4.17.3, lodash@^4.17.4:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loglevel@^1.6.3:
   version "1.6.3"