postgresql connections not closing

We are seeing a problem with postgresql connections not closing when using the latest release `3.2.1`.

```
org.postgresql.util.PSQLException: ERROR: canceling statement due to user request
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2533)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2268)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:313)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:448)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:369)
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:159)
at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:109)
at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeQuery(ProxyPreparedStatement.java:52)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java)
at doobie.free.KleisliInterpreter$PreparedStatementInterpreter.$anonfun$executeQuery$2(kleisliinterpreter.scala:956)
at doobie.free.KleisliInterpreter.$anonfun$primitive$2(kleisliinterpreter.scala:112)
at monix.eval.internal.TaskRunLoop$.startFull(TaskRunLoop.scala:81)
at monix.eval.internal.TaskRunLoop$.$anonfun$restartAsync$1(TaskRunLoop.scala:222)
at cats.effect.internals.PoolUtils$$anon$2$$anon$3.run(PoolUtils.scala:52)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
```

It might be specific to following query, I did not reproduce the issue otherwise.

```
28646] STATEMENT:
select coalesce(cast(sum(o.value) as bigint), 0) from node_outputs o
left join (select i.box_id, i.main_chain from node_inputs i where i.main_chain = true) as i on o.box_id = i.box_id
left join node_transactions tx on tx.id = o.tx_id
where o.main_chain = true
and tx.inclusion_height <= $1
and (i.box_id is null or i.main_chain = false)
and o.ergo_tree = $2
```

Please note we do have autocommited enabled on the database, so I'm not sure why we are seeing this so often.