Increase some log level

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/util/BackgroundDetectionObserver.kt

@@ -49,13 +49,13 @@ internal class DefaultBackgroundDetectionObserver : BackgroundDetectionObserver
     }
 
     override fun onStart(owner: LifecycleOwner) {
-        Timber.v("App returning to foreground…")
+        Timber.d("App returning to foreground…")
         isInBackground = false
         listeners.forEach { it.onMoveToForeground() }
     }
 
     override fun onStop(owner: LifecycleOwner) {
-        Timber.v("App going to background…")
+        Timber.d("App going to background…")
         isInBackground = true
         listeners.forEach { it.onMoveToBackground() }
     }