build(deps): bump @storybook/addons in /website/client (#13824)

Bumps [@storybook/addons](https://github.com/storybookjs/storybook/tree/HEAD/lib/addons) from 6.4.17 to 6.4.18.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v6.4.18/lib/addons)

---
updated-dependencies:
- dependency-name: "@storybook/addons"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

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

website/client/package.json

@@ -17,7 +17,7 @@
     "@storybook/addon-knobs": "6.2.9",
     "@storybook/addon-links": "6.4.17",
     "@storybook/addon-notes": "5.3.21",
-    "@storybook/addons": "6.4.17",
+    "@storybook/addons": "6.4.18",
     "@storybook/vue": "6.3.13",
     "@vue/cli-plugin-babel": "^4.5.15",
     "@vue/cli-plugin-eslint": "^4.5.15",