Update .mailmap for Nicholas Car (#2776)

.mailmap

@@ -65,9 +65,10 @@ Maurizio Nagni <m.nagni@gmail.com> kusamau <m.nagni@gmail.com>
 Michel Pelletier <michel@graphegon.com> michel <devnull@localhost>
 Mikael Nilsson <mikaeln@google.com> mikael <devnull@localhost>
 Nathan Maynes <nathanmaynes@gmail.com> Nathan M <nathanmaynes@gmail.com>
-Nicholas J. Car <nicholas.car@surroundaustralia.com> Nicholas Car <nicholas.car@csiro.au>
-Nicholas J. Car <nicholas.car@surroundaustralia.com> Nicholas Car <nick@kurrawong.net>
-Nicholas J. Car <nicholas.car@surroundaustralia.com> nicholascar <nicholas.car@surroundaustralia.com>
+Nicholas J. Car <nick@kurrawong.ai> Nicholas Car <nicholas.car@csiro.au>
+Nicholas J. Car <nick@kurrawong.ai> Nicholas Car <nick@kurrawong.net>
+Nicholas J. Car <nick@kurrawong.ai> nicholascar <nicholas.car@surroundaustralia.com>
+Nicholas J. Car <nick@kurrawong.ai> Nicholas Car <nicholas.car@ga.gov.au>
 Niklas Lindström <lindstream@gmail.com> lindstream <devnull@localhost>
 Niklas Lindström <lindstream@gmail.com> Niklas Lindstrom <lindstream@gmail.com>
 Olivier Grisel <olivier.grisel@ensta.org> ogrisel <devnull@localhost>
@@ -98,4 +99,4 @@ William Waites <ww@styx.org> wwaites <ww@styx.org>
 William Waites <ww@styx.org> ww@epsilon.styx.org <ww@epsilon.styx.org>
 Whit Morriss <d.w.morriss@gmail.com> whit <devnull@localhost>
 Zach Lûster <kerncece@gmail.com> kernc <kerncece@gmail.com>
-Zach Lûster <kerncece@gmail.com> Kernc <kerncece@gmail.com>
+Zach Lûster <kerncece@gmail.com> Kernc <kerncece@gmail.com>