feat: add kakarot starknet sepolia

[swetshaw]

Kakarot Sepolia is launching on Kakarot Starknet Sepolia with new chain id 5424235787602241.

This PR adds the new chain Kakarot Starknet Sepolia to the list of chains

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PR-Codex overview

This PR introduces the Kakarot Starknet Sepolia chain to the project, including its configuration and export.

Detailed summary

• Added a new entry for Kakarot Starknet Sepolia in .changeset/yellow-waves-unite.md.
• Exported kakarotStarknetSepolia from src/chains/index.ts.
• Created kakarotStarknetSepolia definition in src/chains/definitions/kakarotStarknetSepolia.ts with properties like id, name, nativeCurrency, rpcUrls, and blockExplorers.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 939398e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
viem	Patch

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