prisma: adjusts for mysql and postgres

prisma/postgresql-migrations/20240723152648_adjusts_in_column_openai_creds/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[openaiCredsId]` on the table `OpenaiSetting` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX "OpenaiSetting_openaiCredsId_key" ON "OpenaiSetting"("openaiCredsId");