Flaky test: `LookupJoinableFactoryTest`

[abhishekrb19]

LookupJoinableFactoryTest randomly fails sometimes:

 Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.016 s - in org.apache.druid.segment.join.LookupJoinableFactoryTest
[INFO] 
[INFO] Results:
[INFO] 
Error:  Errors: 
Error:  org.apache.druid.query.dimension.LookupDimensionSpecTest.initializationError
Error:    Run 1: LookupDimensionSpecTest.initializationError » Runtime Could not invoke method: parametersForTestApply defined in class class org.apache.druid.query.dimension.LookupDimensionSpecTest so no params were used.
Error:    Run 2: LookupDimensionSpecTest.initializationError » Runtime Could not invoke method: parametersForTestApply defined in class class org.apache.druid.query.dimension.LookupDimensionSpecTest so no params were used.
Error:    Run 3: LookupDimensionSpecTest.initializationError » Runtime Could not invoke method: parametersForTestApply defined in class class org.apache.druid.query.dimension.LookupDimensionSpecTest so no params were used.
Error:    Run 4: LookupDimensionSpecTest.initializationError » Runtime Could not invoke method: parametersForTestApply defined in class class org.apache.druid.query.dimension.LookupDimensionSpecTest so no params were used.
[INFO] 
Warning:  Flakes: 
Warning:  org.apache.druid.server.coordinator.rules.BroadcastDistributionRuleTest.testBroadcastDecommissioning
Error:    Run 1: BroadcastDistributionRuleTest.testBroadcastDecommissioning:350 expected:<1> but was:<0>
[INFO]   Run 2: PASS
[INFO] 
[INFO] 
Error:  Tests run: 2077, Failures: 0, Errors: 1, Skipped: 26, Flakes: 1
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  09:17 min
[INFO] Finished at: 2023-06-08T15:54:34Z
[INFO] ------------------------------------------------------------------------

I haven't looked into what might be causing this yet. A job that failed with this error if someone wants to dig in: https://github.com/apache/druid/actions/runs/5213015795/jobs/9407713261?pr=14391