DEVELOPERS: add myself to harfbuzz package

Add myself to harfbuzz package.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

DEVELOPERS

@@ -1057,6 +1057,7 @@ N:	Giulio Benetti <giulio.benetti@benettiengineering.com>
 F:	package/at/
 F:	package/binutils/
 F:	package/gcc/
+F:	package/harfbuzz/
 F:	package/libfuse3/
 F:	package/libnspr/
 F:	package/libnss/