graphics.composer: add @2.3  compatibility

adds graphics.composer@2.3 to the compatibility_matrix

Test: boot Pixel 3 with 2.3 composer
Test: ./VtsHalGraphicsComposerV2_3TargetTest (13/13)
Bug: 116028976

Change-Id: Id4098a6580e119430429ec1fe045fd395540a2cc
diff --git a/compatibility_matrices/compatibility_matrix.3.xml b/compatibility_matrices/compatibility_matrix.3.xml
index e13d293..4cb3776 100644
--- a/compatibility_matrices/compatibility_matrix.3.xml
+++ b/compatibility_matrices/compatibility_matrix.3.xml
@@ -193,7 +193,7 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.composer</name>
-        <version>2.1-2</version>
+        <version>2.1-3</version>
         <interface>
             <name>IComposer</name>
             <instance>default</instance>