fix: Remove global DMMF import

Author: franky47

src/extension.ts

@@ -1,4 +1,3 @@
-import { dmmf } from '@prisma/client'
 import { Prisma } from '@prisma/client/extension'
 import { debug } from './debugger'
 import { analyseDMMF } from './dmmf'
@@ -11,7 +10,9 @@ export function fieldEncryptionExtension<
 >(config: Configuration = {}) {
   const keys = configureKeys(config)
   debug.setup('Keys: %O', keys)
-  const models = analyseDMMF(config.dmmf ?? dmmf)
+  const models = analyseDMMF(
+    config.dmmf ?? require('@prisma/client').Prisma.dmmf
+  )
   debug.setup('Models: %O', models)
 
   return Prisma.defineExtension({