Update xvm-prodconfig to version 1.1.55

Requested by glasgall/root@ATHENA.MIT.EDU

diff --git a/xvm-prodconfig b/xvm-prodconfig
index bc1290e..5f732a4 160000 (submodule)
--- a/xvm-prodconfig
+++ b/xvm-prodconfig
@@ -1 +1 @@
-Subproject commit bc1290e7f3f0a4cd3aac5017745840a386338541
+Subproject commit 5f732a4f4e9acc7c6b27aacb48b0e5b1d74c17df