chore: Merge dev branch into staging branch

[johnson-oragui]

This pull request is intended to update the staging branch with all necessary current updates done on the dev branch. ​

Description

This pull request is intended to update the staging branch with all necessary current updates done on the dev branch. Updates like Integration tests for devops, newsletter-subscriptions bug fix.

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Related Issue (Link to issue ticket)

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Motivation and Context

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How Has This Been Tested?

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Screenshots (if appropriate - Postman, etc):

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Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change) ​

Checklist:

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.