Bump vue-loader from 16.5.0 to 16.8.1
Bump vue-loader from 16.5.0 to 16.8.1

Bumps [vue-loader](https://github.com/vuejs/vue-loader) from 16.5.0 to 16.8.1.
- [Release notes](https://github.com/vuejs/vue-loader/releases)
- [Changelog](https://github.com/vuejs/vue-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vue-loader/compare/v16.5.0...v16.8.1)

---
updated-dependencies:
- dependency-name: vue-loader
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
yyc1217/twzipcode-vue,yyc1217/twzipcode-vue