[COMMITTERS] press - pr: update release date

[User T-ishii]

Log Message:
-----------
update release date

Modified Files:
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    pr/releases/8.0/ja:
        release (r1.2 -> r1.3)
        
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/press/pr/releases/8.0/ja/release.diff?r1=1.2&r2=1.3)

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