[BUG][JAVA] Dependencies missing for some Java libraries / configs

[DielN]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

In #20011 we noticed that a lot of the Java libraries using the useReflectionEqualsHashCode config are missing the commons-lang3 dependency in their pom template. I also noticed the mutiny dependency missing in one of the poms for the microprofile library.

openapi-generator version

7.9.0

Steps to reproduce

e.g. update the java-feign sample with useReflectionEqualsHashCode: true, regenerate samples and run mvn integration-test -f samples/client/petstore/java/feign/pom.xml

Suggest a fix

The missing dependencies should be added to the pom templates and the samples should be updated/added so this is covered in the future. It might also be worth looking for more such cases of dependencies missing.