Add 'if_version' parameter to 'ingest.put_pipeline' API

[sethmlarson]

This parameter makes safe concurrent updates to ingest pipelines possible. Added in elastic/elasticsearch#78551

[github-actions]

Following you can find the validation results for the API you have changed.

API	Status	Request	Response
ingest.put_pipeline	🟢	30/30	30/30

You can validate this API yourself by using the make validate target.

[github-actions]

The backport to 7.17 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-7.17 7.17
# Navigate to the new working tree
cd .worktrees/backport-7.17
# Create a new branch
git switch --create backport-1689-to-7.17
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick --mainline 1 412473d1013994a1738bb2064423233b351f4285
# Push it to GitHub
git push --set-upstream origin backport-1689-to-7.17
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-7.17

Then, create a pull request where the base branch is 7.17 and the compare/head branch is backport-1689-to-7.17.