chore(deps): bump solana-program from 2.3.0 to 4.0.0 (#563)

Bumps [solana-program](https://github.com/anza-xyz/solana-sdk) from 2.3.0 to 4.0.0.
- [Release notes](https://github.com/anza-xyz/solana-sdk/releases)
- [Commits](https://github.com/anza-xyz/solana-sdk/compare/sdk@v2.3.0...sdk@v4.0.0)

---
updated-dependencies:
- dependency-name: solana-program
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]