build(deps-dev): bump vitepress from 1.3.4 to 1.4.0

Bumps [vitepress](https://github.com/vuejs/vitepress) from 1.3.4 to 1.4.0.
- [Release notes](https://github.com/vuejs/vitepress/releases)
- [Changelog](https://github.com/vuejs/vitepress/blob/main/CHANGELOG.md)
- [Commits](vuejs/vitepress@v1.3.4...v1.4.0)

---
updated-dependencies:
- dependency-name: vitepress
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -62,7 +62,7 @@
     "ts-jest": "^29.0.3",
     "ts-node": "^10.3.0",
     "typescript": "5.6.2",
-    "vitepress": "1.3.4"
+    "vitepress": "1.4.0"
   },
   "eslintConfig": {
     "env": {