Workflow [PR], commit [20ef469]

Will wait for new regression hash before merging

It seems like we need to regenerate snapshots for ClickHouse 26.1+ for the parquet suite on some tests: https://github.com/Altinity/ClickHouse/actions/runs/22121045010/job/63941013234?pr=1377

Already working on the fix.

✅ QA Verification

This PR enables regression execution on antalya-26.1 and updates the regression commit hash to include the latest test fixes.

During this cycle, multiple regression failures caused by intentional upstream changes were addressed. The regression hash was updated incrementally as fixes were merged, and CI now reflects the stabilized state.

Fixed Suites

The following previously failing suites are now passing:

• ✅ Selects — David Mnatobishvili
• ✅ Versions — Carlos Raymundo
• ✅ Aggregate Functions — Alsu Giliazova
• ✅ Alter Attach — David Mnatobishvili, Carlos Raymundo
• ✅ Alter Replace — Carlos Raymundo
• ✅ Attach — Carlos Raymundo
• ✅ ClickHouse Keeper — David Mnatobishvili
• ✅ Iceberg — Alsu Giliazova
• ✅ Parquet — David Mnatobishvili
• ✅ RBAC — Carlos Raymundo

All addressed regressions are now aligned with the current antalya-26.1 behavior.

Still Failing (Expected — Antalya-specific PRs Pending)

The following suites are Antalya-related and still failing in this PR. They are expected to pass once their corresponding PRs are merged:

• Swarms
• Iceberg
• Parquet
• Export Part
• Export Partition
• Settings (needs update)

These failures are known and expected at this stage.

CI is stable for the verified scope.

Adding verified label.