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

@@ -69,7 +69,7 @@
     "jshint": "^2.9.6",
     "jshint-stylish": "^2.1.0",
     "load-grunt-tasks": "~3.2.0",
-    "lodash": "4.17.20",
+    "lodash": "4.17.21",
     "memoize-one": "5.1.1",
     "moment": "2.24.0",
     "ng-annotate-webpack-plugin": "0.3.0",

yarn.lock

@@ -10052,11 +10052,6 @@ lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@4.17.20:
-  version "4.17.20"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
-  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
-
 lodash@4.17.21, lodash@^3.5.0, lodash@^3.7.0, lodash@^4.0.0, lodash@^4.1.1, lodash@^4.17.10, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@~3.10.0, lodash@~4.17.10, lodash@~4.17.13, lodash@~4.17.19, lodash@~4.17.5:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"