I believe this is done already. ImageMagick is also working properly (I can resize and convert PNGs, GIFs, etc.).
The SVG record is quite simple. SVG, Image file type, Image mime type, SVG mime subtype.
I've hard reloaded the page, uploaded new SVGs to test, and tried recreating the preview image.
Minor edit note. This word is wrong in the Backend File Types panel:
Here you are able to add or remove certain file types according to their extensions. Razuna will look into this table to organize what file belongs to which category. This is a general table, meaning it will able to ALL tenants. If you are adding an extension make sure that ImageMagick or FFMpeg can also progress (should be process) the extension or else you will get errors! Only edit this table if you know what you are doing!