[skip ci] Update .po files

Autobuild bot on TravisCI · Autobuild bot on TravisCI · commit 04fbb390898c · 2020-03-20T19:00:16.000+09:00
diff --git a/whatsnew/changelog.po b/whatsnew/changelog.po
@@ -13,7 +13,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Python 3.6\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2020-03-18 19:10+0900\n"
+"POT-Creation-Date: 2020-03-19 19:11+0900\n"
 "PO-Revision-Date: 2018-06-29 17:42+0000\n"
 "Last-Translator: tomo, 2020\n"
 "Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/ja/)\n"
