Update flatpak runtime to 7

Oowoosh0 · Oowoosh0 · commit cbd3c3f6973a · 2022-05-13T11:46:26.000+02:00
diff --git a/com.github.oowoosh0.pomodoro.yml b/com.github.oowoosh0.pomodoro.yml
@@ -1,7 +1,7 @@
 app-id: com.github.oowoosh0.pomodoro
 
 runtime: io.elementary.Platform
-runtime-version: '6.1'
+runtime-version: '7'
 sdk: io.elementary.Sdk
 
 command: com.github.oowoosh0.pomodoro
