Regenerating Test Case Resources

Working on contributing some changes that would affect the output of one or more test cases, but it seems like even after making changes to an icon png over in /resources, the test cases won’t reflect the changes.

After some more sleuthing, it seems like the test case resources are coming from /tests/fixtures/resources/system_resources_snowy.pbpack, which, presumably, needs to be built separately. Is there a way to properly rebuild the snowy pbpack resources for the test cases?

Thanks!