Removed null constraints on NodeInfo fields that are returned null fr… · opensearch-project/opensearch-java@94171f8

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v3, actions/setup-java@v3. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Failed to save: Tar failed with error: The process 'C:\Windows\System32\tar.exe' failed with exit code 1

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