erlang: bump to version 17.3

Erlang/OTP 17.3 is a service release on the 17 track with mostly bug
fixes, but it does contain a number of new features and characteristics
improvements as well.

Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/erlang/erlang.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-ERLANG_VERSION = 17.1
+ERLANG_VERSION = 17.3
 ERLANG_SITE = http://www.erlang.org/download
 ERLANG_SOURCE = otp_src_$(ERLANG_VERSION).tar.gz
 ERLANG_DEPENDENCIES = host-erlang