contrib: update opendht

Change-Id: I969de308275f02556bd9f82cf5d5c0973652dcab

contrib/src/opendht/SHA512SUMS

-1c8e865efa0e476dca311dfbbccc1da15c14e78d46497ef2333db8364d5588870d3e1bd35198440653529dbd843b23207d6d00ecb10caa86f707e6d0466988ca  opendht-2.1.1.tar.gz
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+7faaa61d67b33ed00ea3f2188744369464433585409d82e629387ea350f18413dc6d40df036970cd098dc9edf0e6eb3ef7e4030f3f4c4cd0264fdea1f71098be  opendht-2.1.2.tar.gz
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contrib/src/opendht/package.json

 {
     "name": "opendht",
-    "version": "2.1.1",
+    "version": "2.1.2",
     "url": "https://github.com/savoirfairelinux/opendht/archive/__VERSION__.tar.gz",
     "deps": [
         "argon2",

contrib/src/opendht/rules.mak

 # OPENDHT
-OPENDHT_VERSION := 2.1.1
+OPENDHT_VERSION := 2.1.2
 OPENDHT_URL := https://github.com/savoirfairelinux/opendht/archive/$(OPENDHT_VERSION).tar.gz
 
 PKGS += opendht