Update exiftool/exiftool from 12.71 to 12.73

The following dependencies have been updated by deps:

• exiftool/exiftool from 12.71 to 12.73

Test Plan

1. Attach a jpg/tiff image to an issue comment
2. Download the just uploaded image
3. Confirm all metadata has been removed

Omnibus equivalent: gitlab-org/omnibus-gitlab!7321 (merged)