Boards: Update BC20 user APP size

Signed-off-by: Ajay Bhargav <[email protected]>

Author: ajaybhargav

boards/quectelbc20.json

@@ -29,7 +29,7 @@
 	"name": "Quectel BC20",
 	"upload": {
 		"maximum_ram_size": 98304,
-		"maximum_size": 139264,
+		"maximum_size": 204800,
 		"require_upload_port": true,
 		"speed": 460800
 	},