feat(dynamic-secret): fix mongodb schema

backend/src/ee/services/dynamic-secret/providers/models.ts

@@ -276,11 +276,11 @@ export const DynamicSecretMongoAtlasSchema = z.object({
 
 export const DynamicSecretMongoDBSchema = z.object({
   host: z.string().min(1).trim().toLowerCase(),
-  port: z.number().optional(),
+  port: z.number().optional().nullable(),
   username: z.string().min(1).trim(),
   password: z.string().min(1).trim(),
   database: z.string().min(1).trim(),
-  ca: z.string().min(1).optional(),
+  ca: z.string().trim().optional().nullable(),
   roles: z
     .string()
     .array()

backend/src/ee/services/dynamic-secret/providers/mongo-db.ts

@@ -44,7 +44,7 @@ export const MongoDBProvider = (): TDynamicProviderFns => {
         password: providerInputs.password
       },
       directConnection: !isSrv,
-      ca: providerInputs.ca
+      ca: providerInputs.ca || undefined
     });
     return client;
   };