contrib: update dhtnet

Change-Id: I49a3557635207885fe7f20fa91db37b80ec24bc0

contrib/src/dhtnet/package.json

 {
     "name": "dhtnet",
-    "version": "a61adb53582d333d6399263bc37d4d22018009ad",
+    "version": "64bb00fc77f1322c4e0f5c1c7bc54e2fee81f0a6",
     "url": "https://review.jami.net/plugins/gitiles/dhtnet/+archive/__VERSION__.tar.gz",
     "deps": [
         "opendht",

contrib/src/dhtnet/rules.mak

 # DHTNET
-DHTNET_VERSION := a61adb53582d333d6399263bc37d4d22018009ad
+DHTNET_VERSION := 64bb00fc77f1322c4e0f5c1c7bc54e2fee81f0a6
 DHTNET_URL := https://review.jami.net/plugins/gitiles/dhtnet/+archive/$(DHTNET_VERSION).tar.gz
 
 PKGS += dhtnet