Merge pull request #301400 from amarshall/fspy-insecure

fspy: mark insecure due to vendoring ancient Electron

pkgs/applications/misc/fspy/default.nix

···
     description = "A cross platform app for quick and easy still image camera matching";
     license = licenses.gpl3;
     homepage = "https://fspy.io/";
+    knownVulnerabilities = [ "Vendors Electron 2.0 (end-of-life)" ];
     maintainers = with maintainers; [ polygon ];
     platforms = platforms.linux;
     mainProgram = "fspy";