fix: revert external dns back to v6

[venkatamutyala]

User description

There appear to be bugs in v7 helm chart: bitnami/charts#25967

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PR Type

Bug fix

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Description

• Reverted external-dns Helm chart version from 7.5.7 to 6.38.0 due to bugs in version 7.
• Referenced issue: [bitnami/external-dns] External-DNS Chart Broken with 7.3.3 due to removal of protected CRD group annotation bitnami/charts#25967

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Changes walkthrough 📝

	Relevant files
Bug fix	application-external-dns.yaml Revert external-dns Helm chart version due to bugs              templates/application-external-dns.yaml Reverted external-dns Helm chart version from 7.5.7 to 6.38.0. +1/-1

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PR Reviewer Guide 🔍

⏱️ Estimated effort to review [1-5]	1
🧪 Relevant tests	No
🔒 Security concerns	No
⚡ Key issues to review	None

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Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarCloud

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PR Code Suggestions ✨

Category	Suggestion	Score
Best practice	Lock the external-dns chart version to a specific patch for increased stability Consider locking the version of the external-dns chart to a specific patch version for better stability and predictability in deployments. Using a more specific version can help avoid unexpected issues if minor updates are made to the 6.38.x series. templates/application-external-dns.yaml [29] -targetRevision: 6.38.0 +targetRevision: 6.38.0 # Consider using a specific patch version, e.g., 6.38.2 Suggestion importance[1-10]: 8 Why: The suggestion to lock the version to a specific patch version is a best practice for stability and predictability in deployments. It helps avoid unexpected issues from minor updates.	8