fix: add type assertion for datasourceUrl in PrismaService constructor

backend/src/prisma/prisma.service.ts

@@ -9,7 +9,8 @@ export class PrismaService
   private readonly logger = new Logger(PrismaService.name);
 
   constructor() {
-    super({ datasourceUrl: process.env.DATABASE_URL });
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    super({ datasourceUrl: process.env.DATABASE_URL } as any);
   }
 
   async onModuleInit() {