chore: update sdr dependency and fix viem version compatibility

[zeluisping]

Description

This PR updates the SilentData Rollup (SDR) dependency and fixes viem version compatibility issues.

Changes made:

• Updated @appliedblockchain/silentdatarollup-viem dependency from 1.0.3 to 1.0.8 in the executor package
• Updated viem dependency from 2.27.0 to 2.31.4 in the root package.json to match the SDR dependency requirements
• Removed unnecessary as any type casts in packages/executor/src/config.ts for transport parameters in createPublicClient, createWalletClient, and fetchAccounts methods
• Updated yarn.lock to reflect the new dependency versions

The type cast removals were made possible by resolving the version mismatch between viem and the viem dependency used by the SilentData package, which was causing TypeScript compilation errors.

Types of changes

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Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Further comments (optional)

[seromenho]

LGTM