Add 2.18 release note

[ananzh]

Description

add 2.18.0 release note

Issues Resolved

na

Screenshot

na

Testing the changes

na

Changelog

• skip

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[ashwin-pc]

Love seeing the changeset feature work so well. This would have been a nightmare to manually resolve/validate.

[opensearch-trigger-bot]

The backport to 2.18 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/OpenSearch-Dashboards/backport-2.18 2.18
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch-Dashboards/backport-2.18
# Create a new branch
git switch --create backport/backport-8779-to-2.18
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 168bb5221cb481de93709877a06ad183ba0fb130
# Push it to GitHub
git push --set-upstream origin backport/backport-8779-to-2.18
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch-Dashboards/backport-2.18

Then, create a pull request where the base branch is 2.18 and the compare/head branch is backport/backport-8779-to-2.18.