chore: städa .env, uppdatera Prisma till 7.7.0

backend/package.json

@@ -14,7 +14,7 @@
     "@nestjs/common": "^10.3.0",
     "@nestjs/core": "^10.3.0",
     "@nestjs/platform-express": "^10.3.0",
-    "@prisma/client": "^6.12.0",
+    "@prisma/client": "^7.7.0",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.15.1",
     "multer": "^1.4.5-lts.2",
@@ -34,7 +34,7 @@
     "@types/node": "^22.15.29",
     "@types/pdf-parse": "^1.1.5",
     "@types/uuid": "^10.0.0",
-    "prisma": "^6.12.0",
+    "prisma": "^7.7.0",
     "typescript": "^5.4.5"
   }
 }