contrib: update dhtnet, build without dependencies

Change-Id: Ib12708c9937663be24f0b3ce6eb0f0f846914c87

contrib/src/dhtnet/package.json

 {
     "name": "dhtnet",
-    "version": "401c52e8b7b3d8dcfede38177f0cc3a1efae044f",
+    "version": "62aefa69fc00a2f6871993caccf7dacf83b283d7",
     "url": "https://review.jami.net/plugins/gitiles/dhtnet/+archive/__VERSION__.tar.gz",
     "deps": [
         "opendht",

contrib/src/dhtnet/rules.mak

 # DHTNET
-DHTNET_VERSION := 401c52e8b7b3d8dcfede38177f0cc3a1efae044f
+DHTNET_VERSION := 62aefa69fc00a2f6871993caccf7dacf83b283d7
 DHTNET_URL := https://review.jami.net/plugins/gitiles/dhtnet/+archive/$(DHTNET_VERSION).tar.gz
 
 PKGS += dhtnet
@@ -19,7 +19,8 @@ endif
 DHTNET_CONF = -DBUILD_SHARED_LIBS=Off \
 	-DBUILD_BENCHMARKS=Off \
 	-DBUILD_TOOLS=Off \
-	-DBUILD_TESTING=Off
+	-DBUILD_TESTING=Off \
+	-DBUILD_DEPENDENCIES=Off
 
 $(TARBALLS)/dhtnet-$(DHTNET_VERSION).tar.gz:
 	$(call download,$(DHTNET_URL))