Bump @storybook/manager-webpack5 from 6.3.12 to 6.4.4

Bumps [@storybook/manager-webpack5](https://github.com/storybookjs/storybook/tree/HEAD/lib/core) from 6.3.12 to 6.4.4.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/v6.4.4/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v6.4.4/lib/core)

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

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

package.json

@@ -78,7 +78,7 @@
     "@storybook/addon-viewport": "^6.3.12",
     "@storybook/addons": "^6.3.12",
     "@storybook/builder-webpack5": "^6.3.12",
-    "@storybook/manager-webpack5": "^6.3.12",
+    "@storybook/manager-webpack5": "^6.4.4",
     "@storybook/react": "^6.3.12",
     "@teamsupercell/typings-for-css-modules-loader": "^2.5.1",
     "@testing-library/dom": "^8.11.1",