meta: consolidate AUTHORS entries for darai0512

PR-URL: #40569
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

.mailmap

@@ -88,6 +88,7 @@ Christopher Lenz <cmlenz@gmail.com> <chris@lamech.local>
 Claudio Rodriguez <cjrodr@yahoo.com> <cr@fansworld.tv>
 Colin Ihrig <cjihrig@gmail.com>
 Corey Martin <coreymartin496@gmail.com>
+Daiki Arai <darai0512@yahoo.co.jp> <darai@yahoo-corp.jp>
 Damien Simonin Feugas <damien.feugas@gmail.com>
 Dan Fabulich <dan@fabulich.com> <dan.fabulich@redfin.com>
 Dan Kaplun <dbkaplun@gmail.com> <dan@beardtree.com>

AUTHORS

@@ -2596,7 +2596,6 @@ DoiChris <pej.deutinger@gmail.com>
 VeysonD <veysond@mercari.com>
 susantruong <susantruong2412@gmail.com>
 Takahiro Nakamura <dxbxdxbxdxb+dev@gmail.com>
-Daiki Arai <darai@yahoo-corp.jp>
 horihiro <hori.kawa.shima.tool+github@gmail.com>
 grimrose <grimrose@users.noreply.github.com>
 timothy searcy <timmyzsearcy@gmail.com>