Bump yarn from 1.16.0 to 1.17.3

Bumps [yarn](https://github.com/yarnpkg/yarn) from 1.16.0 to 1.17.3.
- [Release notes](https://github.com/yarnpkg/yarn/releases)
- [Changelog](https://github.com/yarnpkg/yarn/blob/v1.17.3/CHANGELOG.md)
- [Commits](yarnpkg/yarn@v1.16.0...v1.17.3)

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

package.json

@@ -46,7 +46,7 @@
     "redux": "4.0.1",
     "redux-thunk": "2.3.0",
     "uuid": "3.3.2",
-    "yarn": "^1.16.0"
+    "yarn": "^1.17.3"
   },
   "scripts": {
     "server": "npm-run-all -p webpack dev",

yarn.lock

@@ -4946,7 +4946,7 @@ htmlparser2@^3.9.1:
 
 http-errors@1.6.3, http-errors@~1.6.2, http-errors@~1.6.3:
   version "1.6.3"
-  resolved "http://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz#8b55680bb4be283a0b5bf4ea2e38580be1d9320d"
+  resolved "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz#8b55680bb4be283a0b5bf4ea2e38580be1d9320d"
   integrity sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=
   dependencies:
     depd "~1.1.2"
@@ -7782,7 +7782,7 @@ one-time@0.0.4:
 
 onetime@^1.0.0:
   version "1.1.0"
-  resolved "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
+  resolved "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
   integrity sha1-ofeDj4MUxRbwXs78vEzP4EtO14k=
 
 onetime@^2.0.0:
@@ -11144,10 +11144,10 @@ yargs@^8.0.2:
     y18n "^3.2.1"
     yargs-parser "^7.0.0"
 
-yarn@^1.16.0:
-  version "1.16.0"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.16.0.tgz#5701b58ac555ff91f7b889b7d791b3dc86f8f999"
-  integrity sha512-cfemyGlnWKA1zopUUgebTPf8C4WkPIZ+TJmklwcEAJ4u6oWPtJeAzrsamaGGh/+b1XWe8W51yzAImC4AWbWR1g==
+yarn@^1.17.3:
+  version "1.17.3"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.17.3.tgz#60e0b77d079eb78e753bb616f7592b51b6a9adce"
+  integrity sha512-CgA8o7nRZaQvmeF/WBx2FC7f9W/0X59T2IaLYqgMo6637wfp5mMEsM3YXoJtKUspnpmDJKl/gGFhnqS+sON7hA==
 
 yn@^3.0.0:
   version "3.0.0"