Update favicon

app/assets/images/open_desk/favicon.svg

-<?xml version="1.0" encoding="UTF-8"?>
-<svg id="Ebene_1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128">
-  <defs>
-    <style>
-      .cls-1 {
-        fill: #571efa;
-      }
-
-      .cls-2 {
-        fill: #927afa;
-      }
-    </style>
-  </defs>
-  <path class="cls-2" d="M83.1,97.26v2.12c0,8.97-7.3,16.27-16.27,16.27H28.62c-8.97,0-16.27-7.3-16.27-16.27v-38.2c0-8.97,7.3-16.27,16.27-16.27h2.12v52.35h52.35Z"/>
-  <path class="cls-1" d="M83.81,84.52h-40.33v-44.57c0-15.22,12.38-27.59,27.59-27.59h12.74c17.56,0,31.84,14.28,31.84,31.84v8.49c0,17.56-14.28,31.84-31.84,31.84ZM61.88,66.12h21.93c7.41,0,13.44-6.03,13.44-13.44v-8.49c0-7.41-6.03-13.44-13.44-13.44h-12.74c-5.07,0-9.2,4.13-9.2,9.2v26.18Z"/>
-</svg>
\ No newline at end of file

app/seeders/demo_data/open_desk/theme_seeder.rb

@@ -15,7 +15,7 @@ module DemoData
         custom_style = CustomStyle.current
         custom_style.logo = File.new(OpenProject::OpenDesk::Engine.root.join("app", "assets", "images", "open_desk", "logo.svg"))
         custom_style.favicon = File.new(OpenProject::OpenDesk::Engine.root.join("app", "assets", "images", "open_desk",
-                                                                                "favicon.svg"))
+                                                                                "favicon.png"))
         custom_style.save!
         custom_style.touch
       end