Review LICENSE files for xtable based on feedback provided in general@incubator.apache.org

[vinishjail97]

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Please describe the bug 🐞

TL;DR LICENSE file is in complete and needs changes to release xtable bundled jar.

https://lists.apache.org/thread/93nlgwwblc8lnofmrqsk4ojkmv56q6ft

Are you willing to submit PR?

• I am willing to submit a PR!
• I am willing to submit a PR but need help getting started!

Code of Conduct

• I agree to follow this project's Code of Conduct

[vinishjail97]

Writing the plan here.

1. List all the third-party libraries that are present within the bundled jar.
2. For each dependency, determine the license type (e.g., Apache 2.0, MIT, etc.). This will be present in pom.xml or in the repositories of the dependency.
3. Ensure no dependencies fall under Category B or X as mentioned in ASF policy. Main concern is here for xtable-utilities jar which has bundled dependencies, classes from OpenJDK JOL are used it uses GPL-2.0 licensed. [Ref]

[vinishjail97]

We will be excluding the utilities jar from xtable release, this will be a release blocker for 0.3.0