Fix zod dependency and improve SDK naming
What's Changed
- Move Zod dependency from dev to package @michalrozekariane in https://github.com/hashgraph/hedera-nft-sdk/pull/57/files
- Changes the Hip412Validator class name to be TokenMetadataValidator @michalrozekariane in #56
Full Changelog: v3.0.5...v3.0.6