add api.reuse.software to image allowlist (#9217)

Author: lyndaidaii

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

@@ -7,6 +7,7 @@
         "api.dependabot.com",
         "api.travis-ci.com",
         "api.travis-ci.org",
+        "api.reuse.software",
         "app.fossa.io",
         "app.fossa.com",
         "badge.fury.io",