Flaky-test: PulsarDebeziumOracleSourceTest.testDebeziumOracleDbSource

PulsarDebeziumOracleSourceTest is flaky. The testDebeziumOracleDbSource test method fails sporadically with a timeout.

Failed here: https://github.com/apache/pulsar/runs/4942922232?check_suite_focus=true for https://github.com/apache/pulsar/pull/13950

```
Error: testDebeziumOracleDbSource(org.apache.pulsar.tests.integration.io.sources.debezium.PulsarDebeziumOracleSourceTest) Time elapsed: 1,800.05 s <<< FAILURE!
org.testng.internal.thread.ThreadTimeoutException: Method org.apache.pulsar.tests.integration.io.sources.debezium.PulsarDebeziumOracleSourceTest.testDebeziumOracleDbSource() didn't finish within the time-out 1800000
at org.testng.internal.MethodInvocationHelper.invokeWithTimeoutWithNewExecutor(MethodInvocationHelper.java:371)
at org.testng.internal.MethodInvocationHelper.invokeWithTimeout(MethodInvocationHelper.java:282)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:605)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:174)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:822)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:147)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
at org.testng.TestRunner.privateRun(TestRunner.java:764)
at org.testng.TestRunner.run(TestRunner.java:585)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:384)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:378)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:337)
at org.testng.SuiteRunner.run(SuiteRunner.java:286)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1218)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1140)
at org.testng.TestNG.runSuites(TestNG.java:1069)
at org.testng.TestNG.run(TestNG.java:1037)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:283)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:75)
at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:120)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
```

Start with the PulsarDebeziumOracleSourceTest.testDebeziumOracleDbSource method in the org.apache.pulsar.tests.integration.io.sources.debezium package and review the linked GitHub Actions failure. Reproduce or inspect the timeout behavior, then confirm the test completes reliably without exceeding its timeout.

Written by the indexing model from the issue text.