Prepare for release (2.4.55)

CHANGES

 OpenLDAP 2.4 Change Log
 
-OpenLDAP 2.4.55 Engineering
+OpenLDAP 2.4.55 Release (2020/10/26)
 	Fixed slapd normalization handling with modrdn (ITS#9370)
 	Fixed slapd-meta to check ldap_install_tls return code (ITS#9366)
 	Contrib

build/version.var

@@ -15,9 +15,9 @@
 ol_package=OpenLDAP
 ol_major=2
 ol_minor=4
-ol_patch=X
-ol_api_inc=20454
+ol_patch=55
+ol_api_inc=20455
 ol_api_current=13
-ol_api_revision=2
+ol_api_revision=3
 ol_api_age=11
-ol_release_date="2020/10/12"
+ol_release_date="2020/10/26"