Bump xml2js, @medusajs/medusa and typeorm

Removes [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js). It's no longer used after updating ancestor dependencies [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js), [@medusajs/medusa](https://github.com/medusajs/medusa/tree/HEAD/packages/medusa) and [typeorm](https://github.com/typeorm/typeorm). These dependencies need to be updated together.


Removes `xml2js`

Updates `@medusajs/medusa` from 1.5.0 to 1.12.0
- [Release notes](https://github.com/medusajs/medusa/releases)
- [Changelog](https://github.com/medusajs/medusa/blob/develop/packages/medusa/CHANGELOG.md)
- [Commits](https://github.com/medusajs/medusa/commits/@medusajs/[email protected]/packages/medusa)

Updates `typeorm` from 0.2.45 to 0.3.16
- [Release notes](https://github.com/typeorm/typeorm/releases)
- [Changelog](https://github.com/typeorm/typeorm/blob/master/CHANGELOG.md)
- [Commits](typeorm/typeorm@0.2.45...0.3.16)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-type: indirect
- dependency-name: "@medusajs/medusa"
  dependency-type: indirect
- dependency-name: typeorm
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>