Update OnNode details in JSON configuration (#926)

Author: onnode-ops

testnet/02ddd1ea08c6e0b4297857ac8f55f7cee0091e03d9837177848a1e94a33ff978cb.json

@@ -0,0 +1,10 @@
+{
+  "id": 259,
+  "name": "OnNode",
+  "secp": "02ddd1ea08c6e0b4297857ac8f55f7cee0091e03d9837177848a1e94a33ff978cb",
+  "bls": "a4e721560bd2a2b628d7982f2f5ce0e5d2cba6dbc9330b04c610b7c8369bf20b38058cf8153e9064589a6ed0e6db4447",
+  "website": "https://onnode.org",
+  "description": "Your Strategic Partner in Decentralized Growth",
+  "logo": "https://raw.githubusercontent.com/onnode-ops/onnode-ops/refs/heads/main/logo.png",
+  "x": "https://x.com/onnode_staking"
+}