Merge pull request #113 from jupyterlab/dependabot/npm_and_yarn/lodash-4.17.21

Bump lodash from 4.17.15 to 4.17.21

Author: krassowski

yarn.lock

@@ -3223,12 +3223,7 @@ lodash.escape@^4.0.1:
   resolved "https://registry.yarnpkg.com/lodash.escape/-/lodash.escape-4.0.1.tgz#c9044690c21e04294beaa517712fded1fa88de98"
   integrity sha1-yQRGkMIeBClL6qUXcS/e0fqI3pg=
 
-lodash@^4.17.11:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
-
-lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.4:
+lodash@^4.17.11, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.4:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==