build(deps): bump solana-pubkey from 4.2.0 to 4.3.0 (#310)

Bumps [solana-pubkey](https://github.com/anza-xyz/solana-sdk) from 4.2.0 to 4.3.0.
- [Release notes](https://github.com/anza-xyz/solana-sdk/releases)
- [Commits](https://github.com/anza-xyz/solana-sdk/compare/hash@v4.2.0...hash@v4.3.0)

---
updated-dependencies:
- dependency-name: solana-pubkey
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]