Update invirt-database to version 0.2.12

Requested by dvorak42/root@ATHENA.MIT.EDU

diff --git a/invirt-database b/invirt-database
index 0ea05e1..2d4f0c3 160000 (submodule)
--- a/invirt-database
+++ b/invirt-database
@@ -1 +1 @@
-Subproject commit 0ea05e1293366c01ad900c6db972cd874b684166
+Subproject commit 2d4f0c3341ec5054a1f33b38e1b4c18cb34740d4