release-26.3.2-rc: roachtest: npgsql failed

roachtest.npgsql [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21499576?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21499576?buildTab=artifacts#/npgsql) on release-26.3.2-rc @ [6149d98a3244ba2a3e4417d9e363da83e213e1b7](https://github.com/cockroachdb/cockroach/commits/6149d98a3244ba2a3e4417d9e363da83e213e1b7):

Failed with:

```
(orm_helpers.go:225).summarizeFailed:
Tests run on Cockroach v26.3.2-dev-6149d98a3244ba2a3e4417d9e363da83e213e1b7
Tests run against npgsql v7.0.2
3425 Total Tests Run
2680 tests passed
745 tests failed
150 tests skipped
14 tests ignored
0 tests passed unexpectedly
1 test failed unexpectedly
0 tests expected failed but skipped
0 tests expected failed but not run
---
--- FAIL: Npgsql.Tests.PoolTests.Timeout_getting_connector_from_exhausted_pool(True) - (unexpected)
For a full summary look at the npgsql artifacts
An updated blocklist (npgsqlBlocklist) is available in the artifacts' npgsql log
test artifacts and logs in: /artifacts/npgsql/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21499576-1788544814-155-n1cpu4-0001 | | 10.91.98.198 |

Parameters:
- arch=amd64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=false
- fs=ext4
- localSSD=true
- metamorphicLeases=default
- metamorphicWriteBuffering=true
- runtimeAssertionsBuild=false
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21499576/npgsql/1788571883767/1788572434600)

See: [Datadog Logs](https://us5.datadoghq.com/logs?query=service%3Aroachtest+%40cluster%3Ateamcity-21499576-1788544814-155-n1cpu4&from_ts=1788571883767&to_ts=1788572434600&live=false&storage=flex_tier)

Same failure on other branches

- #174716 release-26.2.7-rc: roachtest: npgsql failed [C-test-failure O-roachtest O-robot T-sql-foundations branch-release-26.2.7-rc release-blocker]

/cc @cockroachlabs/sql-foundations

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*npgsql.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-67934