DEVELOPERS: Update Mylene's email

Signed-off-by: Mylène Josserand <mylene.josserand@collabora.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

DEVELOPERS

@@ -1850,7 +1850,7 @@ N:	Murat Demirten <mdemirten@yh.com.tr>
 F:	package/jpeg-turbo/
 F:	package/libgeotiff/
 
-N:	Mylène Josserand <mylene.josserand@bootlin.com>
+N:	Mylène Josserand <mylene.josserand@collabora.com>
 F:	package/rtl8723bu/
 
 N:	Nathaniel Roach <nroach44@gmail.com>