aidl: audio: update external service version

Test: atest vts_treble_vintf_vendor_test
Bug: 361019537
Flag: EXEMPT bug fix.
Change-Id: Ic069faf598ba67202132a52c68863b032c5adc44
diff --git a/audio/aidl/device_framework_matrix_product.xml b/audio/aidl/device_framework_matrix_product.xml
index 3079aab..0e7e998 100644
--- a/audio/aidl/device_framework_matrix_product.xml
+++ b/audio/aidl/device_framework_matrix_product.xml
@@ -9,7 +9,7 @@
     </hal>
     <hal format="aidl">
         <name>vendor.google.whitechapel.audio.extension</name>
-        <version>2</version>
+        <version>3</version>
         <interface>
             <name>IAudioExtension</name>
             <instance>default</instance>