feat: Refrence chart 4.19 added

[kamal-devtron]

Description

Fixes #

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit/api test cases.

Does this PR introduce a user-facing change?

[gitguardian]

⚠️ GitGuardian has uncovered 12 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

Since your pull request originates from a forked repository, GitGuardian is not able to associate the secrets uncovered with secret incidents on your GitGuardian dashboard.
Skipping this check run and merging your pull request will create secret incidents on your GitGuardian dashboard.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
10220829	Triggered	Generic High Entropy Secret	4753231	devtron-images.txt.source	View secret
10220829	Triggered	Generic High Entropy Secret	279da7f	charts/devtron/values.yaml	View secret
10220829	Triggered	Generic High Entropy Secret	279da7f	charts/devtron/devtron-bom.yaml	View secret
9257608	Triggered	Base64 AWS keys	78febd9	scripts/devtron-reference-helm-charts/deployment-chart_4-20-0/test-values.json	View secret
2763127	Triggered	Generic High Entropy Secret	024d62a	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/secrets-test-values.yaml	View secret
2763127	Triggered	Generic High Entropy Secret	b5ef536	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/secrets-test-values.yaml	View secret
2763127	Triggered	Generic High Entropy Secret	78febd9	scripts/devtron-reference-helm-charts/deployment-chart_4-20-0/secrets-test-values.yaml	View secret
2763127	Triggered	Generic High Entropy Secret	14d998f	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/secrets-test-values.yaml	View secret
141558	Triggered	Generic High Entropy Secret	78febd9	scripts/devtron-reference-helm-charts/deployment-chart_4-20-0/env-values.yaml	View secret
141558	Triggered	Generic High Entropy Secret	b5ef536	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/env-values.yaml	View secret
141558	Triggered	Generic High Entropy Secret	14d998f	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/env-values.yaml	View secret
141558	Triggered	Generic High Entropy Secret	024d62a	scripts/devtron-reference-helm-charts/reference-chart_4-19-0/env-values.yaml	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secrets safely. Learn here the best practices.
3. Revoke and rotate these secrets.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

---

^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Security Rating on New Code (required ≥ A)

See analysis details on SonarCloud

Catch issues before they fail your Quality Gate with our IDE extension SonarLint

[rupinSec]

updated changes related to envoy readiness, liveness and external secret are reviewed and tested.

[sonarqubecloud]

Quality Gate failed

Failed conditions
1 Security Hotspot
E Reliability Rating on New Code (required ≥ A)
C Security Rating on New Code (required ≥ A)

See analysis details on SonarCloud

Catch issues before they fail your Quality Gate with our IDE extension SonarLint