Prep for release (OpenLDAP 2.5.5)

CHANGES

 OpenLDAP 2.5 Change Log
 
-OpenLDAP 2.5.5 Engineering
+OpenLDAP 2.5.5 Release (2021/06/03)
 	Added libldap LDAP_OPT_TCP_USER_TIMEOUT support (ITS#9502)
 	Added lloadd tcp-user-timeout support (ITS#9502)
 	Added slapd-asyncmeta tcp-user-timeout support (ITS#9502)

build/version.var

@@ -15,9 +15,9 @@
 ol_package=OpenLDAP
 ol_major=2
 ol_minor=5
-ol_patch=X
-ol_api_inc=20504
-ol_api_current=0
-ol_api_revision=2
-ol_api_age=0
-ol_release_date="2021/04/29"
+ol_patch=5
+ol_api_inc=20505
+ol_api_current=1
+ol_api_revision=0
+ol_api_age=1
+ol_release_date="2021/06/03"