Rename compatibility_matrix.9.xml to compatibility_matrix.202404.xml

The target compatiblility matrix level is now 202404 instead of 9.

Test: m
Bug: 314845349
Change-Id: I6661486039c0ec3ba4093f1afe11b78a690a96d8
diff --git a/compatibility_matrices/Android.mk b/compatibility_matrices/Android.mk
index c2ffb84..72ead58 100644
--- a/compatibility_matrices/Android.mk
+++ b/compatibility_matrices/Android.mk
@@ -112,7 +112,7 @@
 # interfaces (in the `next` release configuration).
 ifeq ($(RELEASE_AIDL_USE_UNFROZEN),true)
 my_system_matrix_deps += \
-    framework_compatibility_matrix.9.xml
+    framework_compatibility_matrix.202404.xml
 endif
 
 my_framework_matrix_deps += \