mailmap: Jonathan Dieter affiliation

Reviewed-by: Jonathan Dieter <jdieter@lesbg.com>
Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Alan Somers affiliation

Reviewed-by: Alan Somers <asomers@gmail.com>
Signed-off-by: Loic Dachary <loic@dachary.org>