Bump vue-i18n from 9.2.0-beta.17 to 9.2.0-beta.18

Bumps [vue-i18n](https://github.com/kazupon/vue-i18n) from 9.2.0-beta.17 to 9.2.0-beta.18.
- [Release notes](https://github.com/kazupon/vue-i18n/releases)
- [Changelog](https://github.com/kazupon/vue-i18n/blob/v8.x/CHANGELOG.md)
- [Commits](https://github.com/kazupon/vue-i18n/commits)

---
updated-dependencies:
- dependency-name: vue-i18n
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -22,7 +22,7 @@
         "shaka-player": "3.2.1",
         "uikit": "3.8.1",
         "vue": "^3.2.21",
-        "vue-i18n": "^9.2.0-beta.17",
+        "vue-i18n": "^9.2.0-beta.18",
         "vue-router": "^4.0.12",
         "xml-js": "^1.6.11"
     },