No functional change, just indicates that the permission this module provides is "restricted" and should be assigned to users with extra care due to security implications.
This release changes JSONAPI entity collection access control. In certain circumstances this may mean that JSONAPI clients can access less data than expected. Sites should carefully review their JSONAPI integrations and implement their own json api filter access rules if necessary. See examples in jsonapi module in core on how to do so for your own entity types: https://git.drupalcode.org/project/drupal/-/blob/main/core/modules/jsona...