This pull request includes several updates to the configuration and asset files for the Xion testnets, as well as the addition of a new IBC data file. The most important changes include the addition of a new IBC connection, updates to the Xion testnet chain and version files, and the addition of new assets to the Xion testnet asset list.

IBC Connection:

• Added a new IBC connection between the kyve and xion chains in the _IBC/kyve-xion.json file.

Xion Testnet Updates:

• Changed the status of the xion-testnet-1 chain from "live" to "killed" and updated its codebase to version v17.1.0 in the testnets/xiontestnet/chain.json file. [1] [2]
• Updated the IBC version to v8.7.0 and removed all seeds, persistent peers, APIs, and explorers for the xion-testnet-1 chain in the testnets/xiontestnet/chain.json file.

Xion Testnet Version Updates:

• Updated the version information for the xion-testnet-1 and xion-testnet-2 chains to v17.1.0 in the testnets/xiontestnet/versions.json and testnets/xiontestnet2/versions.json files. [1] [2]

Asset List Additions:

• Added new assets, including the Osmosis OSMO Token and Noble USDC Token, to the testnets/xiontestnet2/assetlist.json file.

Xion Testnet 2 Updates:

• Updated the xion-testnet-2 chain to version v17.1.0, added new seeds, persistent peers, APIs, and explorers in the testnets/xiontestnet2/chain.json file. [1] [2] [3] [4]