Bump @vue/runtime-dom from 3.4.15 to 3.4.21

Bumps [@vue/runtime-dom](https://github.com/vuejs/core/tree/HEAD/packages/runtime-dom) from 3.4.15 to 3.4.21.
- [Release notes](https://github.com/vuejs/core/releases)
- [Changelog](https://github.com/vuejs/core/blob/main/CHANGELOG.md)
- [Commits](https://github.com/vuejs/core/commits/v3.4.21/packages/runtime-dom)

---
updated-dependencies:
- dependency-name: "@vue/runtime-dom"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -26,7 +26,7 @@
         "@typescript-eslint/parser": "^6.20.0",
         "@vue/compiler-sfc": "^3.4.15",
         "@vue/eslint-config-typescript": "^12.0.0",
-        "@vue/runtime-dom": "^3.4.15",
+        "@vue/runtime-dom": "^3.4.21",
         "@vue/test-utils": "^2.4.4",
         "@vue/vue3-jest": "^29.2.4",
         "@wikimedia/codex": "^1.0.1",