Merge pull request #6 from jupyter-widgets/dependabot/npm_and_yarn/yarn-1.17.3

Bump yarn from 1.16.0 to 1.17.3

Author: jasongrout

yarn.lock

@@ -5047,9 +5047,9 @@ [email protected]:
     yargs-parser "^13.1.0"
 
 yarn@^1.16:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.16.0.tgz#5701b58ac555ff91f7b889b7d791b3dc86f8f999"
-  integrity sha512-cfemyGlnWKA1zopUUgebTPf8C4WkPIZ+TJmklwcEAJ4u6oWPtJeAzrsamaGGh/+b1XWe8W51yzAImC4AWbWR1g==
+  version "1.17.3"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.17.3.tgz#60e0b77d079eb78e753bb616f7592b51b6a9adce"
+  integrity sha512-CgA8o7nRZaQvmeF/WBx2FC7f9W/0X59T2IaLYqgMo6637wfp5mMEsM3YXoJtKUspnpmDJKl/gGFhnqS+sON7hA==
 
 [email protected]:
   version "0.1.2"