Version 1.17.0-dev.6.4

Cherry-pick '88dd7c8f37c5c51591e0c629d1f9e09599f7339f' to dev
diff --git a/tools/VERSION b/tools/VERSION
index 868ff3c..64279a9 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 17
 PATCH 0
 PRERELEASE 6
-PRERELEASE_PATCH 3
+PRERELEASE_PATCH 4