[ux-icons] Imported icons have wrong xmlns value #2958
Description
When using console ux:icons:import icon:name (ux-icons v2.28.0) the resulting .svg file has "https://www.w3.org/2000/svg" as the xmlns value instead of http://www.w3.org/2000/svg.
It looks like the xmlns value was added in #2661 but has a mistyped namespace (https instead of http).
The incorrect namespace causes browsers and image tools to not treat the file as an SVG image when being displayed.