unplugin-vue-i18n: bump @intlify/vue-i18n-extensions to ^9 to drop the deprecated vue-i18n@10 #674

@intlify/unplugin-vue-i18n 11.2.7 (latest) depends on @intlify/vue-i18n-extensions ^8.0.0, and vue-i18n-extensions 8.0.0 has a hard dependency on vue-i18n ^10.0.0. Every project on vue-i18n 11 (for example through @nuxtjs/i18n 10.x) therefore installs a second, unsupported copy of vue-i18n and gets this on every install:

npm warn deprecated vue-i18n@10.0.8: v9 and v10 no longer supported. please migrate to v11.

@intlify/vue-i18n-extensions 9.0.0 fixes it: it moves vue-i18n and @intlify/shared to optional peer dependencies (^9 || ^10 || ^11), and its published dist is byte-identical to 8.0.0 apart from package.json (engines node >= 22). We checked this by diffing the two tarballs, and by installing 9.0.0 through an npm overrides: the build and our tests pass and the duplicate vue-i18n is gone.

The update is already pending in the Dependency Dashboard (#304, renovate/v11-intlify-vue-i18n-extensions-9.x). Could it be approved and released in a patch of @intlify/unplugin-vue-i18n 11?