Bump cross-spawn and prisma in /backend

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) to 6.0.6 and updates ancestor dependency [prisma](https://github.com/prisma/prisma/tree/HEAD/packages/cli). These dependencies need to be updated together.


Updates `cross-spawn` from 6.0.5 to 6.0.6
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/v6.0.6/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@v6.0.5...v6.0.6)

Updates `prisma` from 1.34.10 to 1.34.12
- [Release notes](https://github.com/prisma/prisma/releases)
- [Commits](https://github.com/prisma/prisma/commits/HEAD/packages/cli)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: indirect
- dependency-name: prisma
  dependency-type: direct:production
...

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

Author: dependabot[bot]