The change to the data module made here:

https://github.com/jquery/jquery/pull/4603/files#diff-38fa4ad21a97c2bf8d5b91d033df3335

breaks projects that depend on hasOwnProperty() function availability.

An example: snapappointments/bootstrap-select#2430
Many other project can be affected as well.

Such change should not be introduced as a minor version upgrade.