chore(deps): bump the benthos group across 1 directory with 2 updates

Bumps the benthos group with 2 updates in the / directory: [github.com/redpanda-data/benthos/v4](https://github.com/redpanda-data/benthos) and [github.com/redpanda-data/connect/public/bundle/free/v4](https://github.com/redpanda-data/connect).


Updates `github.com/redpanda-data/benthos/v4` from 4.51.0 to 4.52.0
- [Changelog](https://github.com/redpanda-data/benthos/blob/main/CHANGELOG.md)
- [Commits](redpanda-data/benthos@v4.51.0...v4.52.0)

Updates `github.com/redpanda-data/connect/public/bundle/free/v4` from 4.49.1 to 4.56.0
- [Release notes](https://github.com/redpanda-data/connect/releases)
- [Changelog](https://github.com/redpanda-data/connect/blob/main/CHANGELOG.md)
- [Commits](redpanda-data/connect@v4.49.1...v4.56.0)

---
updated-dependencies:
- dependency-name: github.com/redpanda-data/benthos/v4
  dependency-version: 4.52.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: benthos
- dependency-name: github.com/redpanda-data/connect/public/bundle/free/v4
  dependency-version: 4.56.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: benthos
...

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

Author: dependabot[bot]