chore(deps-dev): bump copy-webpack-plugin from 11.0.0 to 12.0.2 (#7574)

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:development
  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>
Co-authored-by: John Hill <[email protected]>

package.json

@@ -23,7 +23,7 @@
     "babel-plugin-istanbul": "6.1.1",
     "codecov": "3.8.3",
     "comma-separated-values": "3.6.4",
-    "copy-webpack-plugin": "11.0.0",
+    "copy-webpack-plugin": "12.0.2",
     "cspell": "7.3.8",
     "css-loader": "6.10.0",
     "d3-axis": "3.0.0",