Update packaged version to 6.3.0-arduino7

We fixed the jenkins setup to solve arduino/Arduino#5430

Author: facchinm

package-avrdude.bash

@@ -15,7 +15,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-OUTPUT_VERSION=6.3.0-arduino6
+OUTPUT_VERSION=6.3.0-arduino7
 
 export OS=`uname -o || uname`
 export TARGET_OS=$OS