feat(icons): add radarr-4k (#1294)

Co-authored-by: Dashboard Icons Manager <193821040+dashboard-icons-manager[bot]@users.noreply.github.com>

tree.json

@@ -1624,6 +1624,7 @@
         "rabbitmq.png",
         "racknerd-dark.png",
         "racknerd.png",
+        "radarr-4k.png",
         "radarr.png",
         "radicale.png",
         "rainloop.png",
@@ -3571,6 +3572,7 @@
         "qutebrowser.svg",
         "r.svg",
         "rabbitmq.svg",
+        "radarr-4k.svg",
         "radarr.svg",
         "radicale.svg",
         "rainloop.svg",
@@ -5662,6 +5664,7 @@
         "rabbitmq.webp",
         "racknerd-dark.webp",
         "racknerd.webp",
+        "radarr-4k.webp",
         "radarr.webp",
         "radicale.webp",
         "rainloop.webp",