Bump salla/ouath2-merchant from 1.0.0 to 1.4.0 (#36)

Bumps [salla/ouath2-merchant](https://github.com/SallaApp/oauth2-merchant) from 1.0.0 to 1.4.0.
- [Release notes](https://github.com/SallaApp/oauth2-merchant/releases)
- [Changelog](https://github.com/SallaApp/oauth2-merchant/blob/master/CHANGELOG.md)
- [Commits](SallaApp/oauth2-merchant@1.0.0...1.4.0)

---
updated-dependencies:
- dependency-name: salla/ouath2-merchant
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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