[PT1-366] added cronos support

[Sunnesoft]

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[codecov]

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✅ All modified and coverable lines are covered by tests.

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[Copilot]

Pull request overview

Adds Cronos mainnet/testnet network configurations to the Hardhat setup and bumps the package version.

Changes:

• Bump package version from 6.9.2 to 6.9.3
• Register Cronos mainnet and Cronos testnet via registerCustom(...)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
package.json	Patch version bump to publish the new network support.
hardhat-setup/networks.ts	Adds Cronos mainnet/testnet custom network registrations (RPC + explorer config).

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