Update dependency polished to v4

package.json

@@ -34,7 +34,7 @@
     "gatsby-plugin-typescript": "2.0.1",
     "gatsby-plugin-typography": "2.2.1",
     "normalize.css": "8.0.1",
-    "polished": "2.3.0",
+    "polished": "4.0.5",
     "react": "16.6.3",
     "react-chartjs-2": "2.7.4",
     "react-dom": "16.6.3",

yarn.lock

@@ -732,6 +732,13 @@
   dependencies:
     regenerator-runtime "^0.12.0"
 
+"@babel/runtime@^7.12.5":
+  version "7.12.5"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.12.5.tgz#410e7e487441e1b360c29be715d870d9b985882e"
+  integrity sha512-plcc+hbExy3McchJCEQG3knOsuh3HH+Prx1P6cLIkET/0dLuQDEnrT+s27Axgc9bqfsmNUNHfscgMUdBpC9xfg==
+  dependencies:
+    regenerator-runtime "^0.13.4"
+
 "@babel/[email protected]":
   version "7.0.0-beta.44"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.0.0-beta.44.tgz#f8832f4fdcee5d59bf515e595fc5106c529b394f"
@@ -7597,12 +7604,12 @@ plyr@^3.3.21, plyr@^3.4.7:
     raven-js "^3.27.0"
     url-polyfill "^1.1.0"
 
-polished@2.3.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/polished/-/polished-2.3.0.tgz#66c8b66bc666e95d9d12d760dac9df758aed8f8e"
-  integrity sha512-G2yD9LhJy5HBuU+Im5qe70ubaJI/ZTTOIJO6GRMwJ2WSoAiPzlm8+LjAXMnm9/K0E0NumRVHvQu2HHPKQSYQjw==
+polished@4.0.5:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/polished/-/polished-4.0.5.tgz#3f91873c8f72dec1723b3f892f57fbb22645b23d"
+  integrity sha512-BY2+LVtOHQWBQpGN4GPAKpCdsBePOdSdHTpZegRDRCrvGPkRPTx1DEC+vGjIDPhXS7W2qiBxschnwRWTFdMZag==
   dependencies:
-    "@babel/runtime" "^7.0.0"
+    "@babel/runtime" "^7.12.5"
 
 portfinder@^1.0.9:
   version "1.0.19"
@@ -8448,6 +8455,11 @@ regenerator-runtime@^0.12.0:
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
   integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
 
+regenerator-runtime@^0.13.4:
+  version "0.13.7"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz#cac2dacc8a1ea675feaabaeb8ae833898ae46f55"
+  integrity sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==
+
 regenerator-transform@^0.13.3:
   version "0.13.3"
   resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.13.3.tgz#264bd9ff38a8ce24b06e0636496b2c856b57bcbb"