Chore(deps): Bump pyiceberg from 0.6.1 to 0.7.1

Bumps [pyiceberg](https://github.com/apache/iceberg-python) from 0.6.1 to 0.7.1.
- [Release notes](https://github.com/apache/iceberg-python/releases)
- [Commits](apache/iceberg-python@pyiceberg-0.6.1...pyiceberg-0.7.1)

---
updated-dependencies:
- dependency-name: pyiceberg
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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