build(deps): bump lodash from 4.17.20 to 4.17.21 in /packages/graph

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)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: direct:production
...

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

packages/graph/yarn.lock

@@ -253,9 +253,9 @@ is-any-array@^0.1.0:
     rollup "^1.31.1"
 
 lodash@^4.17.15, lodash@^4.17.20:
-  version "4.17.20"
-  resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.20.tgz?cache=0&sync_timestamp=1597337964525&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Flodash%2Fdownload%2Flodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
-  integrity sha1-tEqbYpe8tpjxxRo1RaKzs2jVnFI=
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 ml-array-max@^1.2.0:
   version "1.2.0"