fix(deps): bump element-ui from 2.15.8 to 2.15.9

Bumps [element-ui](https://github.com/ElemeFE/element) from 2.15.8 to 2.15.9.
- [Release notes](https://github.com/ElemeFE/element/releases)
- [Changelog](https://github.com/ElemeFE/element/blob/dev/CHANGELOG.en-US.md)
- [Commits](ElemeFE/element@v2.15.8...v2.15.9)

---
updated-dependencies:
- dependency-name: element-ui
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -27,7 +27,7 @@
     "cookie-universal-nuxt": "^2.2.2",
     "core-js": "^3.19.3",
     "dayjs": "^1.11.5",
-    "element-ui": "^2.15.8",
+    "element-ui": "^2.15.9",
     "md5": "^2.3.0",
     "nuxt": "^2.15.8",
     "vue": "^2.6.14",