Change record status: 
Project: 
Introduced in branch: 
10.2.x
Introduced in version: 
10.2.0
Description: 

The dependencies symfony/filesystem and symfony/finder have been moved from dev dependencies in the root composer.json to core runtime dependencies in core/composer.json.

On many installs this will have no affect as they are dependencies of Drush.

Impacts: 
Site builders, administrators, editors
Module developers