Bump polished from 3.6.3 to 3.6.4

Bumps [polished](https://github.com/styled-components/polished) from 3.6.3 to 3.6.4.
- [Release notes](https://github.com/styled-components/polished/releases)
- [Commits](styled-components/polished@v3.6.3...v3.6.4)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -31,7 +31,7 @@
     "isomorphic-unfetch": "^3.0.0",
     "js-base64": "^2.5.2",
     "next": "^9.2.2",
-    "polished": "^3.6.3",
+    "polished": "^3.6.4",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
     "styled-components": "^4.4.1",

yarn.lock

@@ -6278,10 +6278,10 @@ [email protected]:
   dependencies:
     ts-pnp "^1.1.2"
 
-polished@^3.6.3:
-  version "3.6.3"
-  resolved "https://registry.yarnpkg.com/polished/-/polished-3.6.3.tgz#68f4fe7ffad46530733029b939dd12978200cb59"
-  integrity sha512-QJ0q0b6gX1+0OJtPMfgVJxV0vg5XTa4im+Rca989dAtmsd/fEky3X+0A+V+OUXq1nyiDGplJwqD853dTS0gkPg==
+polished@^3.6.4:
+  version "3.6.4"
+  resolved "https://registry.yarnpkg.com/polished/-/polished-3.6.4.tgz#cec6bc0fbffc5d6ce5799c85bcc1bca5e63f1dee"
+  integrity sha512-21moJXCm/7EvjeKQz5w89QDDKNPCoimc83CqwZZGJluFdMXsFlMQl9lPA/OMRkoceZ19kU0anKlMgZmY7LJSJw==
   dependencies:
     "@babel/runtime" "^7.9.2"