Update to Substrait v0.98.0

[substrait-project-bot]

Release Notes

0.98.0 (2026-07-19)

⚠ BREAKING CHANGES

• protos: The deprecated left_keys and right_keys fields have
  been removed from HashJoinRel and MergeJoinRel. Producers must use
  the keys field instead.
• protos: The deprecated offset and count fields have been
  removed from FetchRel. Producers must use offset_expr and
  count_expr instead.
• protos: remove deprecated VirtualTable.values field (#1131)
• protos: remove deprecated IntervalDayToSecond.microseconds field (#1116)

Features

• protos: remove deprecated IntervalDayToSecond.microseconds field (#1116) (a4ad9f4)
• protos: remove deprecated left_keys/right_keys from join rels (#1129) (08b2736)
• protos: remove deprecated offset/count from FetchRel (#1130) (b7e8d02)
• protos: remove deprecated VirtualTable.values field (#1131) (7b0bd66)

Bug Fixes

• tests: correct decimal sum and nullif results (#1048) (a750c25)

See https://github.com/substrait-io/substrait/releases/tag/v0.98.0