Bump xlsx from 0.16.9 to 0.17.0 in /admin

Bumps [xlsx](https://github.com/SheetJS/sheetjs) from 0.16.9 to 0.17.0.
- [Release notes](https://github.com/SheetJS/sheetjs/releases)
- [Changelog](https://github.com/SheetJS/sheetjs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/SheetJS/sheetjs/commits/v0.17.0)

---
updated-dependencies:
- dependency-name: xlsx
  dependency-type: direct:production
...

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

Author: dependabot[bot]