contrib: bump opendht to 48c10af32f

This bump brings these fixes:
- crypto: revert to DER fmt to pack certificate

Refs #72156

Change-Id: I4e9f8dd9e4a9982fdb73dfc0c9069a26b7de6b14

contrib/src/opendht/rules.mak

 # OPENDHT
-OPENDHT_VERSION := 06a32eedd15330f42227fb554ca2006e424c02ff
+OPENDHT_VERSION := 48c10af32fca51cac8c7f9dca54e17595152e73b
 OPENDHT_URL := https://github.com/savoirfairelinux/opendht/archive/$(OPENDHT_VERSION).tar.gz
 
 PKGS += opendht