Bump vue2-datepicker from 3.6.3 to 3.7.0

Bumps [vue2-datepicker](https://github.com/mengxiong10/vue2-datepicker) from 3.6.3 to 3.7.0.
- [Release notes](https://github.com/mengxiong10/vue2-datepicker/releases)
- [Changelog](https://github.com/mengxiong10/vue2-datepicker/blob/master/CHANGELOG.md)
- [Commits](mengxiong10/vue2-datepicker@v3.6.3...v3.7.0)

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