zenfone7: Track android-15 branch

Change-Id: I53309fb585d25726bd070439221c788c1f7e0b3f
diff --git a/omni.dependencies b/omni.dependencies
index 8ad8360..9902963 100644
--- a/omni.dependencies
+++ b/omni.dependencies
@@ -3,13 +3,13 @@
     "remote": "omnirom",
     "repository": "android_device_asus_sm8250-common",
     "target_path": "device/asus/sm8250-common",
-    "revision": "android-14.0"
+    "revision": "android-15"
   },
   {
     "remote": "omnirom",
     "repository": "android_kernel_asus_sm8250",
     "target_path": "kernel/asus/sm8250",
-    "revision": "android-14.0"
+    "revision": "android-15"
   },
   {
     "remote": "gitlab",