Allow images from infragistics.com (#9947)

Author: jsakamotoIGJP

src/NuGetGallery/App_Data/Files/Content/Trusted-Image-Domains.json

@@ -24,6 +24,7 @@
         "flat.badgen.net",
         "gitlab.com",
         "img.shields.io",
+        "infragistics.com",
         "i.imgur.com",
         "isitmaintained.com",
         "media.githubusercontent.com",