[BUILD] Replace `java.version` 1.8 with 8

[bowenliang123]

:mag: Description

Issue References 🔗

This pull request fixes #

Describe Your Solution 🔧

• fix the compilation error on Zulu JDK8 (Zulu 8.82.0.21-cA-macos-aarch64 with M4 Max chip on MacOS 15.1), when running build/mvn clean install -pl :kyuubi-util -DskipTests -am command to build a pure Java module, by replacing version code sytle from 1.8 to 8.

Types of changes :bookmark:

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Test Plan 🧪

Behavior Without This Pull Request :coffin:

Behavior With This Pull Request :tada:

Related Unit Tests

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Checklist 📝

• [ ] This patch was not authored or co-authored using Generative Tooling

Be nice. Be informative.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 0.00%. Comparing base (27e7254) to head (1a1e3f3). Report is 2 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #6813 +/- ## ====================================== Coverage 0.00% 0.00% ====================================== Files 687 687 Lines 42442 42442 Branches 5793 5793 ====================================== Misses 42442 42442 ```

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🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[pan3793]

thanks, merged to master/1.10.1/1.9.3