build(deps): bump shepherd.js from 15.2.1 to 15.2.2 (#655)

Bumps [shepherd.js](https://github.com/shipshapecode/shepherd) from 15.2.1 to 15.2.2.
- [Release notes](https://github.com/shipshapecode/shepherd/releases)
- [Changelog](https://github.com/shipshapecode/shepherd/blob/main/CHANGELOG.md)
- [Commits](https://github.com/shipshapecode/shepherd/commits)

---
updated-dependencies:
- dependency-name: shepherd.js
  dependency-version: 15.2.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -40,7 +40,7 @@
   ],
   "types": "./dist/index.d.ts",
   "dependencies": {
-    "shepherd.js": "^15.2.1"
+    "shepherd.js": "^15.2.2"
   },
   "devDependencies": {
     "@babel/eslint-parser": "^7.28.6",