Bump vue-multiselect from 2.1.0 to 2.1.3 in /settings

Bumps [vue-multiselect](https://github.com/shentao/vue-multiselect) from 2.1.0 to 2.1.3.
- [Release notes](https://github.com/shentao/vue-multiselect/releases)
- [Commits](https://github.com/shentao/vue-multiselect/compare/v2.1.0...v2.1.3

)

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