Bump lodash from 4.17.4 to 4.17.21

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.4 to 4.17.21.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.4...4.17.21)

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

yarn.lock

@@ -855,6 +855,13 @@ babel-runtime@6.23.0, babel-runtime@^6.18.0, babel-runtime@^6.22.0, babel-runtim
     core-js "^2.4.0"
     regenerator-runtime "^0.10.0"
 
+babel-runtime@^6.20.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
+  dependencies:
+    core-js "^2.4.0"
+    regenerator-runtime "^0.11.0"
+
 babel-template@^6.24.1, babel-template@^6.25.0:
   version "6.25.0"
   resolved "https://registry.yarnpkg.com/babel-template/-/babel-template-6.25.0.tgz#665241166b7c2aa4c619d71e192969552b10c071"
@@ -1436,6 +1443,12 @@ deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
 
+deep-iterator@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/deep-iterator/-/deep-iterator-1.1.0.tgz#35227173b38be01b580d6f7c32732b1fd1769082"
+  dependencies:
+    babel-runtime "^6.20.0"
+
 defaults@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/defaults/-/defaults-1.0.3.tgz#c656051e9817d9ff08ed881477f3fe4019f3ef7d"
@@ -3512,8 +3525,8 @@ lodash.values@~2.4.1:
     lodash.keys "~2.4.1"
 
 lodash@^4.0.0, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 lodash@~1.0.1:
   version "1.0.2"
@@ -4364,6 +4377,10 @@ regenerator-runtime@^0.10.0:
   version "0.10.1"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.1.tgz#257f41961ce44558b18f7814af48c17559f9faeb"
 
+regenerator-runtime@^0.11.0:
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
+
 regenerator-transform@0.9.11:
   version "0.9.11"
   resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.9.11.tgz#3a7d067520cb7b7176769eb5ff868691befe1283"