meta: add .mailmap entry for daguej

Consolidate duplicate AUTHORS entries with a .mailmap entry.

PR-URL: #40223
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>

.mailmap

@@ -216,6 +216,7 @@ Jonathan Persson <persson.jonathan@gmail.com> <jonathan.persson@creuna.se>
 Jonathan Rentzsch <jwr.git@redshed.net>
 Jose Luis Vivero <josluivivgar@gmail.com>
 Joseph Leon <joseph.leon.9@gmail.com>
+Josh Dague <jd@josh3736.net> <daguej@email.uc.edu>
 Josh Erickson <josh@snoj.us>
 Josh Hunter <jopann@gmail.com>
 Joshua S. Weinstein <josher19@users.sf.net>

AUTHORS

@@ -541,7 +541,7 @@ Maxwell Krohn <themax@gmail.com>
 Saúl Ibarra Corretgé <s@saghul.net>
 Greg Brail <greg@apigee.com>
 Shuhei Kagawa <shuhei.kagawa@gmail.com>
-Josh Dague <daguej@email.uc.edu>
+Josh Dague <jd@josh3736.net>
 Goh Yisheng (Andrew) <mail.yisheng@gmail.com>
 James Pickard <james.pickard@gmail.com>
 Andrew Low <Andrew_Low@ca.ibm.com>
@@ -3134,7 +3134,6 @@ lucasg <lucas.georges@outlook.com>
 Brian 'bdougie' Douglas <ilikerobot@gmail.com>
 Lee, Bonggi <iyabong@gmail.com>
 Momtchil Momtchev <momtchil@momtchev.com>
-Josh Dague <jd@josh3736.net>
 Vincent Boivin <vboivin04@gmail.com>
 ax1 <16510021+ax1@users.noreply.github.com>
 Shubham Parihar <51517103+iShibi@users.noreply.github.com>