Update xvm-prodconfig to version 1.1.48~migration3

Requested by dvorak42/root@ATHENA.MIT.EDU

diff --git a/xvm-prodconfig b/xvm-prodconfig
index a4bb6f3..e9fd7ee 160000 (submodule)
--- a/xvm-prodconfig
+++ b/xvm-prodconfig
@@ -1 +1 @@
-Subproject commit a4bb6f3ed978d953a5d96324b4a6d7063068fcde
+Subproject commit e9fd7ee1e6c8b36a846b2a12aac4e8f172c1d298