build(deps-dev): bump vitepress from 1.6.3 to 1.6.4

Bumps [vitepress](https://github.com/vuejs/vitepress) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/vuejs/vitepress/releases)
- [Changelog](https://github.com/vuejs/vitepress/blob/v1.6.4/CHANGELOG.md)
- [Commits](vuejs/vitepress@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: vitepress
  dependency-version: 1.6.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -62,7 +62,7 @@
     "ts-jest": "^29.0.3",
     "ts-node": "^10.3.0",
     "typescript": "5.9.2",
-    "vitepress": "1.6.3"
+    "vitepress": "1.6.4"
   },
   "eslintConfig": {
     "env": {

yarn.lock

@@ -6199,10 +6199,10 @@ vite@^5.4.14:
   optionalDependencies:
     fsevents "~2.3.3"
 
-vitepress@1.6.3:
-  version "1.6.3"
-  resolved "https://registry.yarnpkg.com/vitepress/-/vitepress-1.6.3.tgz#4e4662ce2ad55ef64604ecf4f96231a8da2fe9ba"
-  integrity sha512-fCkfdOk8yRZT8GD9BFqusW3+GggWYZ/rYncOfmgcDtP3ualNHCAg+Robxp2/6xfH1WwPHtGpPwv7mbA3qomtBw==
+vitepress@1.6.4:
+  version "1.6.4"
+  resolved "https://registry.yarnpkg.com/vitepress/-/vitepress-1.6.4.tgz#1b6c68fede541a3f401a66263dce0c985e2d8d92"
+  integrity sha512-+2ym1/+0VVrbhNyRoFFesVvBvHAVMZMK0rw60E3X/5349M1GuVdKeazuksqopEdvkKwKGs21Q729jX81/bkBJg==
   dependencies:
     "@docsearch/css" "3.8.2"
     "@docsearch/js" "3.8.2"