ubuntu-latest is now Ubuntu 24.04 (Noble), which has no Citus packages.
Patch citusdata_community.list to use jammy after the curl installer
creates it, then re-run apt-get update before installing.

Fixes: https://github.com/citusdata/citus/issues/7692

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

PostgreSQL 17 + Citus 13.0 system tables expose columns with OID alias
types (regnamespace, regrole, regtype, regproc, etc.) that were not
handled by getColumnType(), causing an AssertionError. Map them to TEXT
since they are textually representable, like the existing regclass entry.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- CitusSchema.fromConnection now skips all tables/views starting with
  "citus_" (not just "citus_tables") to handle the citus_schemas view
  added in Citus 12.0, which was causing unexpected SQL errors when
  SQLancer tried to DELETE/ALTER it after the regnamespace fix exposed it
- Update columnar table index error string from the old (incorrect)
  "indexes not supported for columnar tables" to the actual Citus error
  "unsupported access method for the index on columnar table", and add
  "BRIN indexes on columnar tables are not supported"

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Two errors produced by Citus 13.0 were not in the expected errors list:
- "alter table command is currently unsupported": Citus restriction on
  certain ALTER TABLE operations (e.g., multi-subcommand ALTERs, type
  changes) on distributed tables
- "could not open relation with OID 0": occurs with columnar temporary
  tables (USING columnar ON COMMIT DROP), DISCARD TEMPORARY, and some
  INSERT operations when Citus cannot resolve the relation OID

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>