build(deps): bump solana-sdk from 3.0.0 to 4.0.0

Bumps [solana-sdk](https://github.com/anza-xyz/solana-sdk) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/anza-xyz/solana-sdk/releases)
- [Commits](https://github.com/anza-xyz/solana-sdk/compare/sdk@v3.0.0...sdk@v4.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]