Update iceberg 1.7.0

[MonkeyCanCode]

Description

Update public site as well as getting start example to use Apache Iceberg 1.7.0. We may want to hold off on upper the trino build as there is a defective for https://github.com/apache/iceberg/issues/11539

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Documentation update
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

How Has This Been Tested?

The change for spark is tested via test suits according to https://github.com/apache/polaris/pull/442.

Checklist:

Please delete options that are not relevant.

• [] I have performed a self-review of my code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [ ] My changes generate no new warnings
• [ ] If adding new functionality, I have discussed my implementation with the community using the linked GitHub issue