Updating upstream provider breaks Cockroach compatibility

[AaronFriel]

See:

• Too much parrallelism creates issues with Grant: tuple concurrently updated #126 (comment)

I've requested advice from Cockroach maintainers here:

• sql: fill out pg_advisory_lock stubs cockroachdb/cockroach#13546 (comment)

[pgavlin]

All upstream issues have been fixed; closing.

[pgavlin]

Closed in error--my query was wrong. Reopening.