v25.6.0

What's Changed

• chore: Add ext_default crate by @scsmithr in #3889
• chore: Add ceiling and log10 as function aliases by @scsmithr in #3890
• Implement PostgreSQL-compatible sign function by @devin-ai-integration in #3892
• Implement factorial function matching PostgreSQL semantics by @devin-ai-integration in #3891
• chore: Add alias_of column to list_functions output by @scsmithr in #3893
• feat: Initial iceberg_metadata function by @scsmithr in #3894
• chore: Parse DISCARD ... by @scsmithr in #3895
• feat: implement regexp_instr function with PostgreSQL semantics by @devin-ai-integration in #3896
• feat: iceberg_snapshots function by @scsmithr in #3897
• feat: iceberg_manifest_list function by @scsmithr in #3898
• feat: iceberg_data_files function by @scsmithr in #3899

Full Changelog: v25.5.13...v25.6.0