Switch timestamp to timestamptz (#4696)

* Switch timestamps to timestamptz

* update standard/custom objects logic to use timestamptz

* fix test

packages/twenty-server/src/engine/metadata-modules/relation-metadata/relation-metadata.entity.ts

@@ -90,9 +90,9 @@ export class RelationMetadataEntity implements RelationMetadataInterface {
   @JoinColumn()
   toFieldMetadata: FieldMetadataEntity;
 
-  @CreateDateColumn()
+  @CreateDateColumn({ type: 'timestamptz' })
   createdAt: Date;
 
-  @UpdateDateColumn()
+  @UpdateDateColumn({ type: 'timestamptz' })
   updatedAt: Date;
 }