added bobaSepolia chain

[Si-Ki]

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PR-Codex overview

This PR adds the bobaSepolia chain to the project.

Detailed summary

• Added bobaSepolia chain definition in src/chains/definitions/bobaSepolia.ts
• Updated src/chains/index.ts to export bobaSepolia
• Defined bobaSepolia chain properties like id, name, nativeCurrency, rpcUrls, and blockExplorers

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[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 10b62892311c3d7c4601fefe686ac6b2664f1c41

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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