Fix flaky tests

[oliverlietz]

• PdeExplodedReferenceTest.getHelloService » TestContainer Framework has not yet stopped after 180000 ms. waitForStop did not return (Ubuntu, CI)
• ReferenceJarTest.getHelloService » TestContainer Framework has not yet stopped after 180000 ms. waitForStop did not return (Ubuntu, CI)
• UnresolvedBundleInvokerTest.exceptionOnUnresolvedBundle:44 2024-10-18T19:44:35.9806012Z [INFO] Expected: a string containing "There are unresolved bundles" 2024-10-18T19:44:35.9811512Z [INFO] but: was "C:\Users\runneradmin\AppData\Local\Temp\1729280653581-0\org.eclipse.osgi\1\0\bundleFile: The process cannot access the file because it is being used by another process. (Windows, CI)
• org.ops4j.pax.exam.regression.multi.repository.RepositoryTest [] Caused by: org.osgi.framework.BundleException: Error while renaming bundle file to final location: C:\Users\runneradmin\AppData\Local\Temp\1729280653581-0\org.eclipse.osgi\1\0\bundleFile (Windows, CI)
• Error: [ERROR] Failures: Error: [ERROR] BeforeAfterInvokerTest.beforeAfterMethodInvocationOrder:55 expected:<0> but was:<2> Error: [ERROR] Errors: Error: [ERROR] BeforeAfterTest.getInjectedService » TestContainer Framework has not yet stopped after 180000 ms. waitForStop did not return Error: [ERROR] BeforeAfterTest.injectedBundleContext » TestContainer Framework has not yet stopped after 180000 ms. waitForStop did not return