Update to Gradle 8.5

[psychbot]

Fixing https://github.com/opensearch-project/performance-analyzer-rca/issues/530

Upgrading to gradle 8.5

Check List

• [ ] Backport Labels added.
• [ ] All tests pass
• [X] Commits are signed per the DCO using --signoff

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[codecov[bot]]

Codecov Report

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

Comparison is base (70222ba) 74.44% compared to head (d0f617c) 74.43%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #532 +/- ## ============================================ - Coverage 74.44% 74.43% -0.01% + Complexity 2667 2666 -1 ============================================ Files 317 317 Lines 16378 16378 Branches 1282 1282 ============================================ - Hits 12192 12191 -1 + Misses 3671 3670 -1 - Partials 515 517 +2 ```

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[atharvasharma61]

Need to backport these changes. @ansjcy Can you add the tags? We don't have the necessary permission.

[reta]

@psychbot there is already pull request open for that a few weeks ago https://github.com/opensearch-project/performance-analyzer-rca/pull/528

[ansjcy]

Let's use https://github.com/opensearch-project/performance-analyzer-rca/pull/528 since it already covered this change.

[psychbot]

Marking this closed as https://github.com/opensearch-project/performance-analyzer-rca/pull/528 is merged.