TBR: syncslides: Make all versions 'v23-0.1'.

Change-Id: I974c7e9b3a06a8ba951ca23219c611b0f08ac112
MultiPart: 24/27
diff --git a/VERSION b/VERSION
index 603150b..6d6ff85 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-jiri-0.1
+v23-0.1