contrib: update dhtnet

Change-Id: Iccdc9d1af32c74696d28d2246c62931ff6cc571a

contrib/src/dhtnet/package.json

 {
     "name": "dhtnet",
-    "version": "6c999d86fa684815e32a72fb5712cfea882e378d",
+    "version": "8242020285a5fa7c93f880862c6f3302561244a5",
     "url": "https://review.jami.net/plugins/gitiles/dhtnet/+archive/__VERSION__.tar.gz",
     "deps": [
         "opendht",

contrib/src/dhtnet/rules.mak

 # DHTNET
-DHTNET_VERSION := 6c999d86fa684815e32a72fb5712cfea882e378d
+DHTNET_VERSION := 8242020285a5fa7c93f880862c6f3302561244a5
 DHTNET_URL := https://review.jami.net/plugins/gitiles/dhtnet/+archive/$(DHTNET_VERSION).tar.gz
 
 PKGS += dhtnet