Update to `2.15.0`

[timsuchanek]

In 2.15.0, which is being released today, we have a breaking change:
All types, which are not a model, an enum or PrismaClient can't be directly imported from @prisma/client anymore, but need to be imported from a new namespace called Prisma.
Example:

Before

import { JsonValue, PrismaClient } from '@prisma/client'

After

import { Prisma, PrismaClient } from '@prisma/client'

Prisma.JsonValue

You can already try this out now with the latest dev version of Prisma Client: @prisma/client@dev.

This change has been introduced in 2.12.0, but now we actually remove the old exports. So you should probably require your users to have at least @prisma/client@2.12.0.

A link to our failing e2e test with prisma-json-schema-generator: https://github.com/prisma/e2e-tests/runs/1733749691?check_suite_focus=true

[timsuchanek]

It turned out, it was something different in our tests, this package continues to work just fine with 2.15.0, no changes required.