build(deps): bump shepherd.js from 12.0.2 to 12.0.4 (#73)

Bumps [shepherd.js](https://github.com/shepherd-pro/shepherd) from 12.0.2 to 12.0.4.
- [Release notes](https://github.com/shepherd-pro/shepherd/releases)
- [Changelog](https://github.com/shepherd-pro/shepherd/blob/main/CHANGELOG.md)
- [Commits](https://github.com/shepherd-pro/shepherd/commits)

---
updated-dependencies:
- dependency-name: shepherd.js
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -24,6 +24,6 @@
     "webpack-merge": "^5.10.0"
   },
   "dependencies": {
-    "shepherd.js": "^12.0.2"
+    "shepherd.js": "^12.0.4"
   }
 }