Update .mailmap

.mailmap

@@ -11,6 +11,7 @@ Damien Regad <dregad@mantisbt.org> <damien.regad@merckserono.net>
 David Hicks <d@hx.id.au> <hickseydr@optusnet.com.au>
 David Newcomb <davidnewcomb@users.sourceforge.net> davidnewcomb
 dependabot[bot] <support@dependabot.com> <dependabot[bot]@users.noreply.github.com>
+dependabot[bot] <support@dependabot.com> <27856297+dependabot-preview[bot]@users.noreply.github.com>
 Dmitriy V Kuranov <dkuranov@beeline.ru> DKuranov
 Frank Rodgers <frodgers@redcom.com> <frodgers@iowa.redcom.com>
 Grigoriy Ermolaev <igflocal@gmail.com> grigoriy