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

Bumps [solana-pubkey](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/[email protected]@v4.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]