Update dependency mini-css-extract-plugin to v1.6.2

Author: renovate-bot

package.json

@@ -140,7 +140,7 @@
     "ignore-styles": "5.0.1",
     "jsdom": "16.4.0",
     "jsdom-global": "3.0.2",
-    "mini-css-extract-plugin": "1.3.0",
+    "mini-css-extract-plugin": "1.6.2",
     "mocha": "8.4.0",
     "node-amazon-ses-simulator": "1.0.1",
     "node-mocks-http": "1.11.0",