Prep for release (2.5.12)

CHANGES

 OpenLDAP 2.5 Change Log
 
-OpenLDAP 2.5.12 Engineering
+OpenLDAP 2.5.12 Release (2022/05/04)
 	Fixed libldap to drop connection when non-LDAP data is received (ITS#9803)
 	Fixed libldap to allow newlines at end of included file (ITS#9811)
 	Fixed slapd slaptest conversion of olcLastBind (ITS#9808)

build/version.var

@@ -15,9 +15,9 @@
 ol_package=OpenLDAP
 ol_major=2
 ol_minor=5
-ol_patch=X
-ol_api_inc=20511
+ol_patch=12
+ol_api_inc=20512
 ol_api_current=1
-ol_api_revision=6
+ol_api_revision=7
 ol_api_age=1
-ol_release_date="2022/01/20"
+ol_release_date="2022/05/04"