Correct the year definition in Android.bp of messagingtest am: 7c4e41b7dc

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Messaging/+/2881806

Change-Id: I239a4a24dab9d4d0e5655af79d33e1624957b5fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>