[wp-trac] [WordPress Trac] #48703: Update compressed images for 5.4

[WordPress Trac]

#48703: Update compressed images for 5.4
------------------------------+--------------------
 Reporter:  SergeyBiryukov    |      Owner:  (none)
     Type:  task (blessed)    |     Status:  new
 Priority:  normal            |  Milestone:  5.4
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
------------------------------+--------------------
 Background: #48203, #48206.

 `grunt-contrib-imagemin` was updated in [46404] and some GIF images were
 re-minified, however I still get a bunch of changed files after running
 `grunt imagemin`:
 {{{
 src/wp-admin/images/loading.gif
 src/wp-admin/images/media-button-image.gif
 src/wp-admin/images/media-button-video.gif
 src/wp-admin/images/resize-2x.gif
 src/wp-admin/images/resize-rtl-2x.gif
 src/wp-admin/images/resize-rtl.gif
 src/wp-admin/images/resize.gif
 src/wp-admin/images/sort-2x.gif
 src/wp-admin/images/spinner-2x.gif
 src/wp-admin/images/spinner.gif
 src/wp-admin/images/wpspin_light-2x.gif
 src/wp-admin/images/wpspin_light.gif
 src/wp-includes/images/smilies/icon_cry.gif
 src/wp-includes/images/smilies/icon_lol.gif
 src/wp-includes/images/smilies/icon_redface.gif
 src/wp-includes/images/spinner-2x.gif
 src/wp-includes/images/spinner.gif
 src/wp-includes/images/wpspin-2x.gif
 src/wp-includes/images/wpspin.gif
 }}}
 Per a [https://wordpress.slack.com/archives/C18723MQ8/p1574082406038400
 quick check in Slack], this is the case for other committers as well, so
 it seems like the files should be updated.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48703>
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