Update .app files (#4802)

Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>

Author: community-scripts-pr-app[bot]

ct/headers/umbrel

@@ -0,0 +1,6 @@
+   __  __          __              __   ____  _____    _    ____  ___
+  / / / /___ ___  / /_  ________  / /  / __ \/ ___/   | |  / /  |/  /
+ / / / / __ `__ \/ __ \/ ___/ _ \/ /  / / / /\__ \    | | / / /|_/ / 
+/ /_/ / / / / / / /_/ / /  /  __/ /  / /_/ /___/ /    | |/ / /  / /  
+\____/_/ /_/ /_/_.___/_/   \___/_/   \____//____/     |___/_/  /_/   
+