fix: delete region causes cascade error (#672)

Co-authored-by: olivermrbl <oliver@mrbltech.com>

packages/medusa/src/models/region.ts

@@ -47,7 +47,7 @@ export class Region {
   )
   countries: Country[]
 
-  @ManyToMany(() => PaymentProvider, { eager: true, cascade: true })
+  @ManyToMany(() => PaymentProvider, { eager: true, cascade: ['insert', 'update'] })
   @JoinTable({
     name: "region_payment_providers",
     joinColumn: {
@@ -61,7 +61,7 @@ export class Region {
   })
   payment_providers: PaymentProvider[]
 
-  @ManyToMany(() => FulfillmentProvider, { eager: true, cascade: true })
+  @ManyToMany(() => FulfillmentProvider, { eager: true, cascade: ['insert', 'update'] })
   @JoinTable({
     name: "region_fulfillment_providers",
     joinColumn: {