Bump @safe-global/protocol-kit from 4.0.4 to 5.1.1

Bumps [@safe-global/protocol-kit](https://github.com/safe-global/safe-core-sdk) from 4.0.4 to 5.1.1.
- [Release notes](https://github.com/safe-global/safe-core-sdk/releases)
- [Commits](https://github.com/safe-global/safe-core-sdk/commits)

---
updated-dependencies:
- dependency-name: "@safe-global/protocol-kit"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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