Update Gradle to 8.9

[reta]

Description

Update Gradle to 8.9

Issues Resolved

N/A

Testing

N/A

Check List

• New functionality includes testing
• New functionality has been documented
• New Roles/Permissions have a corresponding security dashboards plugin PR
• API changes companion pull request created
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.28%. Comparing base (8d29b11) to head (1eccde9).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4553   +/-   ##
=======================================
  Coverage   65.28%   65.28%           
=======================================
  Files         317      317           
  Lines       22274    22274           
  Branches     3582     3582           
=======================================
  Hits        14542    14542           
+ Misses       5940     5938    -2     
- Partials     1792     1794    +2     

see 2 files with indirect coverage changes

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/security/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/security/backport-2.x
# Create a new branch
git switch --create backport/backport-4553-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 d928370b644347af2379f9233798527760332ee6
# Push it to GitHub
git push --set-upstream origin backport/backport-4553-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/security/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-4553-to-2.x.