Bump motion from 12.38.0 to 12.40.0 in /docs (#400)

Bumps [motion](https://github.com/motiondivision/motion) from 12.38.0 to 12.40.0.
- [Changelog](https://github.com/motiondivision/motion/blob/main/CHANGELOG.md)
- [Commits](motiondivision/motion@v12.38.0...v12.40.0)

---
updated-dependencies:
- dependency-name: motion
  dependency-version: 12.40.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

docs/package.json

@@ -15,7 +15,7 @@
     "esbuild": "0.28.0",
     "fuse.js": "7.3.0",
     "maska": "3.2.0",
-    "motion": "12.38.0",
+    "motion": "12.40.0",
     "mustache": "4.2.0",
     "tailwindcss": "4.3.0",
     "tippy.js": "6.3.7",