Fix CI failure when upgrade to jdk 21

[Hailong-am]

What is the bug?

CI https://github.com/opensearch-project/index-management/actions/runs/11567832887/job/32198812295?pr=1276

#1276

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

What is the expected behavior?
A clear and concise description of what you expected to happen.

What is your host/environment?

• OS: [e.g. iOS]
• Version [e.g. 22]
• Plugins

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Do you have any additional context?
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