Footer needs unique ARIA label

[cjg89]

Describe the bug

When combined with the UCF Footer, or when any other <footer> element is in use on any page using this theme, non-distinguishable landmark warnings get triggered by accessibility scanners.

Steps to Reproduce

Inspect a page in SiteImprove with the UCF Footer and a site-specific footer.

Expected Behavior

The <footer> defined in the footer.php template part should have a unique ARIA label.
https://github.com/UCF/UCF-WordPress-Theme/blob/master/template-parts/footer.php#L9

Possible Fix

Add an aria-label attribute.

Your environment:

n/a

Additional context

See also: UCF/UCF-Footer-Plugin#18