How do I cite — in APA style — a Creative Commons licensed image retrieved from Wikimedia Commons?
Section 12.18 of APA 7 states:

To write a copyright attribution,

state whether the material was reprinted or adapted (use &quot;From&quot; for reprintings and &quot;Adapted from&quot; for adaptations);
provide the title, author, year of publication, and source of the material;
indicate the material's copyright status...; and
provide the permission statement as requested by the copyright holder if permission was sought and obtained.

Place the copyright attribution as follows:

For a reprinted or adapted ... image ..., place the copyright attribution at the end of the general note for the table or figure ...

(American Psychological Association, 2020, p. 389)

In other words, the copyright attribution goes into the general note for the figure, not in the references section.
As an aside, APA 7 has some differences from APA 6, one of which is that you no longer use &quot;Retrieved from&quot; unless the source is likely to change often (as in a Wiki page).
For the references section, visual works are covered in section 10.14. I would do something like this (with hanging indent):
Morin, B. (2018). Standing white tiger [Photograph]. Wikimedia Commons. https://commons.wikimedia.org/wiki/File:Standing_white_tiger.jpg