Build/Test Tools: Update a few image URLs in HTTP and image cropping …

…tests.

Follow-up to #60865 / [57903] where similar instances were recently updated due to an upstream change.

Particularly the `test_wp_crop_image_with_url()` test recently began to fail on some environments, likely because of the same change.

This updates the image URLs with the aim to bring more consistency and to get the test passing again more broadly.

Fixes #60907.
Built from https://develop.svn.wordpress.org/trunk@57924


git-svn-id: http://core.svn.wordpress.org/trunk@57425 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-57923';
+$wp_version = '6.6-alpha-57924';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.