Rollup merge of #73161 - tspiteri:mailmap, r=nikomatsakis

Add mailmap entry

Author: Dylan-DPC

.mailmap

@@ -266,6 +266,7 @@ Tim Chevalier <chevalier@alum.wellesley.edu> <catamorphism@gmail.com>
 Tim JIANG <p90eri@gmail.com>
 Tim Joseph Dumol <tim@timdumol.com>
 Torsten Weber <TorstenWeber12@gmail.com> <torstenweber12@gmail.com>
+Trevor Spiteri <tspiteri@ieee.org> <trevor.spiteri@um.edu.mt>
 Ty Overby <ty@pre-alpha.com>
 Ulrik Sverdrup <bluss@users.noreply.github.com> bluss <bluss@users.noreply.github.com>
 Ulrik Sverdrup <bluss@users.noreply.github.com> bluss <bluss>