[C++][CI] arrow-compute-plan-test timeouts on nightly job for ubuntu 18.04

[raulcd]

Describe the bug, including details regarding any error messages, version, and platform.

Since #15183 was merged the nightly job for:
test-ubuntu-18.04-cpp-static
has been failing with a timeout on:

 Errors while running CTest
88/88 Test #36: arrow-compute-plan-test ...................***Timeout 300.00 sec
Running arrow-compute-plan-test, redirecting output into /build/cpp/build/test-logs/arrow-compute-plan-test.txt (attempt 1/1)


99% tests passed, 1 tests failed out of 88

It does not seem to cause issues on the verification scripts so I don't think it is a release blocker but we should investigate to fix the test or increase the timeout?

Component(s)

C++, Continuous Integration

[raulcd]

cc @vibhatha

[westonpace]

Is this consistent? It may be fixed by #33700

[raulcd]

It has been failing consistently since the first failure for the last 3 nightlies based on: http://crossbow.voltrondata.com/

[raulcd]

it seems to be fixed by the PR mentioned above: #33700
I've triggered the crossbow job manually from latest master (containing the fix) and has been successful: https://github.com/ursacomputing/crossbow/actions/runs/3931964628
I am closing the issue, will re-open if nightly jobs fail again but seems fixed.