contrib/gitdm: add more individual contributors

I've only added the names explicitly acked.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Bin Meng <bmeng@tinylab.org>
Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Strahinja Jankovic <strahinja.p.jankovic@gmail.com>
Acked-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230315174331.2959-32-alex.bennee@linaro.org>

contrib/gitdm/group-map-individuals

@@ -38,3 +38,7 @@ paul@nowt.org
 git@xen0n.name
 simon@simonsafar.com
 research_trasio@irq.a4lg.com
+shentey@gmail.com
+bmeng@tinylab.org
+strahinja.p.jankovic@gmail.com
+Jason@zx2c4.com