Update HDInsight release notes for October 2025

[apurbasroy]

Updated the release date and added new release notes for HDInsight, including OS versions and issues fixed.

[prmerger-automator]

@apurbasroy : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 5aa92a8:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
articles/hdinsight/hdinsight-release-notes-archive.md	⚠️Warning		Details

articles/hdinsight/hdinsight-release-notes-archive.md

• Line 57, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Issues fixed''. Each second level heading (H2) in an article must be unique.
• Line 61, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Updates''. Each second level heading (H2) in an article must be unique.
• Line 65, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Reminder''. Each second level heading (H2) in an article must be unique.
• Line 114, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Issues fixed''. Each second level heading (H2) in an article must be unique.
• Line 120, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Updates''. Each second level heading (H2) in an article must be unique.
• Line 124, Column 1: [Warning: duplicate-h2s - See documentation] Duplicate heading: 'H2 'Reminder''. Each second level heading (H2) in an article must be unique.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[learn-build-service-prod]

Learn Build status updates of commit c8022fe:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/hdinsight/hdinsight-release-notes-archive.md	✅Succeeded

For more details, please refer to the build report.

[apurbasroy]

#sign-off

[prmerger-automator]

Invalid command: '#sign-off'. Only the assigned author of one or more file in this PR can sign off. @yeturis

[ttorble]

@apurbasroy - did you intend to open this PR in the private repo? It looks like you have access to the private repo, and if so, you should use that for content updates. I'll close this PR. Thanks.