japanese/wordpress: update 4.5.2 -> 4.5.3

Approved by: ports-secteam (with hat)
Security: CVE-2016-5832
Security: CVE-2016-5833
Security: CVE-2016-5834
Security: CVE-2016-5835
Security: CVE-2016-5836
Security: CVE-2016-5837
Security: CVE-2016-5838
Security: CVE-2016-5839
Security: https://vuxml.FreeBSD.org/freebsd/bfcc23b6-3b27-11e6-8e82-002590263bf5.html
MFH: 2016Q2