Adjust Caffeine extension description to drop Java 8 mention

[rsvoboda]

Adjust Caffeine extension description to drop Java 8 mention

https://github.com/ben-manes/caffeine says 'A high performance caching library for Java '

[github-actions]

🎊 PR Preview 04deb60 has been successfully built and deployed to https://quarkus-pr-main-45722-preview.surge.sh/version/main/guides/

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[quarkus-bot]

Status for workflow Quarkus Documentation CI

This is the status report for running Quarkus Documentation CI on commit f9553b7.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

Warning

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[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit f9553b7.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

---

Flaky tests - Develocity

⚙️ JVM Tests - JDK 17

📦 extensions/infinispan-cache/deployment

✖ io.quarkus.cache.infinispan.InfinispanCacheTest.testGetAsyncWithParallelCalls - History

• expected: "thread1" but was: "thread2" - org.opentest4j.AssertionFailedError

org.opentest4j.AssertionFailedError: 

expected: "thread1"
 but was: "thread2"
	at io.quarkus.cache.infinispan.InfinispanCacheTest.testGetAsyncWithParallelCalls(InfinispanCacheTest.java:283)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at io.quarkus.test.QuarkusUnitTest.runExtensionMethod(QuarkusUnitTest.java:513)
	at io.quarkus.test.QuarkusUnitTest.interceptTestMethod(QuarkusUnitTest.java:427)

[ben-manes]

Thanks! Upgrading to 3.2.0 might also be good when you get a chance.

[rsvoboda]

Let's see how it goes - #45740