Bump the npm-major-upgrades group with 1 update

Bumps the npm-major-upgrades group with 1 update: [sassdoc-theme-herman](https://github.com/oddbird/sassdoc-theme-herman).


Updates `sassdoc-theme-herman` from 5.0.1 to 6.0.0
- [Release notes](https://github.com/oddbird/sassdoc-theme-herman/releases)
- [Changelog](https://github.com/oddbird/sassdoc-theme-herman/blob/main/CHANGELOG.md)
- [Commits](oddbird/sassdoc-theme-herman@v5.0.1...v6.0.0)

---
updated-dependencies:
- dependency-name: sassdoc-theme-herman
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: npm-major-upgrades
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -89,7 +89,7 @@
     "sass": "^1.72.0",
     "sass-embedded": "^1.72.0",
     "sassdoc": "^2.7.4",
-    "sassdoc-theme-herman": "^5.0.1",
+    "sassdoc-theme-herman": "^6.0.0",
     "stylelint": "^16.3.1",
     "stylelint-config-standard-scss": "^13.0.0",
     "typescript": "^5.4.3"