Bump @storybook/html-webpack5 from 7.5.3 to 7.6.20 in /packages/styles

Bumps [@storybook/html-webpack5](https://github.com/storybookjs/storybook/tree/HEAD/code/frameworks/html-webpack5) from 7.5.3 to 7.6.20.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/7.6.20/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/7.6.20/code/frameworks/html-webpack5)

---
updated-dependencies:
- dependency-name: "@storybook/html-webpack5"
  dependency-version: 7.6.20
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/styles/package.json

@@ -32,7 +32,7 @@
     "@babel/plugin-transform-runtime": "^7.10.4",
     "@babel/preset-env": "^7.23.2",
     "@storybook/html": "7.5.3",
-    "@storybook/html-webpack5": "7.5.3",
+    "@storybook/html-webpack5": "7.6.20",
     "@storybook/preview-api": "^7.5.3",
     "autoprefixer": "^10.0.2",
     "creevey": "^0.7.37",