Bump prisma from 5.21.1 to 5.22.0 in /backend

Bumps [prisma](https://github.com/prisma/prisma/tree/HEAD/packages/cli) from 5.21.1 to 5.22.0.
- [Release notes](https://github.com/prisma/prisma/releases)
- [Commits](https://github.com/prisma/prisma/commits/5.22.0/packages/cli)

---
updated-dependencies:
- dependency-name: prisma
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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