Update invirt-database to version 0.2.12

Requested by mitchb/root@ATHENA.MIT.EDU

diff --git a/invirt-database b/invirt-database
index 2d4f0c3..1c4ab89 160000 (submodule)
--- a/invirt-database
+++ b/invirt-database
@@ -1 +1 @@
-Subproject commit 2d4f0c3341ec5054a1f33b38e1b4c18cb34740d4
+Subproject commit 1c4ab89c5b2d54b6fd05817589266f755c4e6935