main/openldap: upgrade to 2.4.18

main/openldap/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=openldap
-pkgver=2.4.16
-pkgrel=2
+pkgver=2.4.18
+pkgrel=0
 pkgdesc="LDAP Server"
 url="http://www.openldap.org/"
 license="custom"
@@ -69,7 +69,7 @@ libldap() {
 	mv "$pkgdir"/etc/openldap/ldap.conf "$subpkgdir"/etc/openldap/
 }
 
-md5sums="ed5b86e9d2b372d10edfe3bb59fee165  openldap-2.4.16.tgz
+md5sums="fecd7a64b6d9a0eb79b817d2562956ed  openldap-2.4.18.tgz
 2524e490ba334a760fa57057c16da7a9  openldap-2.4-ppolicy.patch
 d19d0502f046078ecd737e29e7552fa8  openldap-2.4.11-libldap_r.patch
 a729bf553d12b4a9fbda0ff5202a0443  slapd.initd