Bump vue-i18n from 8.26.5 to 8.26.7

Bumps [vue-i18n](https://github.com/kazupon/vue-i18n) from 8.26.5 to 8.26.7.
- [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/compare/v8.26.5...v8.26.7)

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

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

package.json

@@ -20,7 +20,7 @@
         "postcss": "^8.3",
         "uiv": "^1.3",
         "vue": "^2.6",
-        "vue-i18n": "^8.25",
+        "vue-i18n": "^8.26",
         "vue-loader": "^15",
         "vue-template-compiler": "^2.6"
     }