feat: update start:prod script to include database migration

Author: LoTwT

package.json

@@ -9,7 +9,7 @@
     "start": "nest start",
     "start:dev": "nest start --watch",
     "start:debug": "nest start --debug --watch",
-    "start:prod": "node dist/main",
+    "start:prod": "prisma migrate deploy && node dist/main",
     "test": "jest",
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",