Update Raviole SVN to 31

Bug: 232157623
Change-Id: I3bd635f4229f0332c8dd5dba0c3d1677535da99d
diff --git a/device-raven.mk b/device-raven.mk
index fb94ac4..4145e61 100644
--- a/device-raven.mk
+++ b/device-raven.mk
@@ -178,7 +178,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_VENDOR_PROPERTIES += \
-    ro.vendor.build.svn=29
+    ro.vendor.build.svn=31
 
 # Set support hide display cutout feature
 PRODUCT_PRODUCT_PROPERTIES += \