Bump copy-webpack-plugin from 11.0.0 to 12.0.2 (#178)

Bumps [copy-webpack-plugin](https://github.com/webpack-contrib/copy-webpack-plugin) from 11.0.0 to 12.0.2.
- [Release notes](https://github.com/webpack-contrib/copy-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/copy-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/copy-webpack-plugin@v11.0.0...v12.0.2)

---
updated-dependencies:
- dependency-name: copy-webpack-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -22,7 +22,7 @@
     "@babel/polyfill": "^7.4.4",
     "algoliasearch": "^5.2.5",
     "classnames": "^2.2.6",
-    "copy-webpack-plugin": "^11.0.0",
+    "copy-webpack-plugin": "^12.0.2",
     "google-map-react": "^2.2.1",
     "instantsearch.css": "^8.5.0",
     "instantsearch.js": "^4.74.1",