chore(elasticsearch): bump elasticsearch to 9.4.3

[mberlofa]

Closes #691.

Summary

• Bump Elasticsearch from 9.4.2 to 9.4.3.
• Bump the optional Kibana default image tag to 9.4.3 to keep the paired Elastic Stack version aligned.
• Update values schema, README defaults, and image assertion tests.

Upstream Evidence

• Official Elasticsearch release notes: https://www.elastic.co/docs/release-notes/elasticsearch
• Docker Official Elasticsearch manifest verified: docker.io/library/elasticsearch:9.4.3
• Docker Official Kibana manifest verified: docker.io/library/kibana:9.4.3
• Manifest platforms for both images: linux/amd64, linux/arm64.
• Elastic 9.4.3 release notes include Elasticsearch fixes and enhancements; no chart-level breaking change was identified for this patch bump.

Site Sync

• Site PR: docs(elasticsearch): sync 9.4.3 default site#372

Validation

• make image-verify IMAGE=docker.io/library/elasticsearch:9.4.3
• make image-verify IMAGE=docker.io/library/kibana:9.4.3
• make deps-check CHART=elasticsearch
• helm unittest charts/elasticsearch passed: 14 suites, 99 tests.
• make validate-chart CHART=elasticsearch passed fully: 17 layers, including k3d behavioral validation for default and all CI values scenarios.
• make standards-check CHART=elasticsearch
• node scripts/charts/template-standards-check.js --chart elasticsearch
• make site-sync-check CHART=elasticsearch
• make release-check REPO=charts
• make attribution-check REPO=charts

Summary by CodeRabbit

• New Features
  • Updated the Elasticsearch Helm chart to use version 9.4.3 by default.
  • Aligned the default Kibana image version with the same 9.4.3 release.
• Documentation
  • Refreshed chart documentation and upgrade notes to reflect the new default image versions.
• Tests
  • Updated chart tests to expect the new Elasticsearch and Kibana image tags.

[github-actions]

Standards Check (GR-079) — PASS

Every changed chart fully passes standards-check.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: c1bd42f7-7ea3-4537-aa28-6ba498c689d0

📥 Commits

Reviewing files that changed from the base of the PR and between 66a35d5 and 866cad8.

📒 Files selected for processing (6)

• charts/elasticsearch/Chart.yaml
• charts/elasticsearch/README.md
• charts/elasticsearch/tests/kibana_test.yaml
• charts/elasticsearch/tests/profile_test.yaml
• charts/elasticsearch/values.schema.json
• charts/elasticsearch/values.yaml

---

📝 Walkthrough

Walkthrough

This PR bumps the Elasticsearch Helm chart's upstream image version from 9.4.2 to 9.4.3, updating the chart's appVersion, default image tags for Elasticsearch and Kibana in values.yaml and values.schema.json, README documentation, and corresponding unit test expectations.

Changes

Image Version Bump

Layer / File(s)	Summary
Chart metadata and default values charts/elasticsearch/Chart.yaml, charts/elasticsearch/values.yaml, charts/elasticsearch/values.schema.json	appVersion and default image.tag/kibana.image.tag values updated from 9.4.2 to 9.4.3.
Documentation and test updates charts/elasticsearch/README.md, charts/elasticsearch/tests/kibana_test.yaml, charts/elasticsearch/tests/profile_test.yaml	README default tags and upgrade notes, plus test assertions for Kibana and Elasticsearch image tags, updated to reflect 9.4.3.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Related issues: Resolves the upstream image update request tracked in issue #691 (elasticsearch 9.4.2 → 9.4.3).

Suggested labels: chore, dependencies, elasticsearch

Suggested reviewers: helm-chart-maintainers

Poem
A hop, a skip, a version's climb,
9.4.2 to 9.4.3, right on time.
Kibana and Elastic, tags aligned,
Tests and docs, all redefined.
🐰 A tiny bump, but neatly signed!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely summarizes the main change: bumping Elasticsearch to 9.4.3.
Linked Issues check	✅ Passed	The diff updates the image tag, appVersion, docs, schema, and tests as requested for the 9.4.3 Elasticsearch chart bump.
Out of Scope Changes check	✅ Passed	The added README, schema, and test updates are directly related to the version bump and not out of scope.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/elasticsearch-9.4.3

---

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

🟢 Security Scan: elasticsearch

Framework	Score
MITRE + NSA + SOC2	83.333336%

✅ Security posture acceptable.