Rollup merge of rust-lang#134972 - Skgland:master, r=Noratrieb

add .mailmap entry for myself

Seeing rust-lang#132474 in the bors queue I decided to check myself and noticed I was listed four times.
This fixed that by cannonicalizing all entries to use my username and the github no-reply email address, rather than some combination of name or username and different email addresses.

.mailmap

@@ -589,6 +589,9 @@ Simon Sapin <simon@exyr.org> <simon.sapin@exyr.org>
 Simonas Kazlauskas <git@kazlauskas.me> Simonas Kazlauskas <github@kazlauskas.me>
 Simonas Kazlauskas <git@kazlauskas.me> <simonas+t-compiler@kazlauskas.me>
 Siva Prasad <sivaauturic@gmail.com>
+Skgland <3877590+Skgland@users.noreply.github.com>
+Skgland <3877590+Skgland@users.noreply.github.com> <bb-github@t-online.de>
+Skgland <3877590+Skgland@users.noreply.github.com> <bennet.blessmann+github@googlemail.com>
 Smittyvb <me@smitop.com>
 Sophia June Turner <547158+sophiajt@users.noreply.github.com>
 Sophia June Turner <547158+sophiajt@users.noreply.github.com> <547158+jntrnr@users.noreply.github.com>