Bump @storybook/builder-webpack5 from 6.4.19 to 6.4.20

Bumps [@storybook/builder-webpack5](https://github.com/storybookjs/storybook/tree/HEAD/lib/core) from 6.4.19 to 6.4.20.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/v6.4.20/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v6.4.20/lib/core)

---
updated-dependencies:
- dependency-name: "@storybook/builder-webpack5"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

packages/components/package.json

@@ -60,12 +60,12 @@
     ]
   },
   "devDependencies": {
-    "@storybook/addon-actions": "^6.4.18",
+    "@storybook/addon-actions": "^6.4.20",
-    "@storybook/addon-essentials": "^6.4.18",
+    "@storybook/addon-essentials": "^6.4.20",
-    "@storybook/addon-links": "^6.4.18",
+    "@storybook/addon-links": "^6.4.20",
-    "@storybook/builder-webpack5": "^6.4.18",
+    "@storybook/builder-webpack5": "^6.4.20",
     "@storybook/manager-webpack5": "^6.4.18",
-    "@storybook/node-logger": "^6.4.18",
+    "@storybook/node-logger": "^6.4.20",
     "@storybook/preset-create-react-app": "^4.1.0",
     "@storybook/react": "^6.4.18",
     "@types/webpack": "^5.28.0",