Updated version to go along with the merge of pull request #424
from Kareem Farid, adding a metal layer lower limit for the clock
network guides in the openlane setup for sky130.

VERSION

diff --git a/VERSION b/VERSION
index 22d256c..42d08cf 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.463
+1.0.464