Changelog: Explicit init parameters and logging for the scrubber lambda

[cotti]

This pull request introduces the new docs-lambda-changelog-scrubber project to the solution and enhances its logging and AWS client initialization. The most important changes are grouped below:

Project and Solution Structure

• Added the docs-lambda-changelog-scrubber project to the solution file docs-builder.slnx, making it part of the build and deployment pipeline.

AWS Client Initialization

• Updated the S3 client initialization in Program.cs to explicitly use environment variable credentials and region, with custom timeout and retry settings for improved reliability and configuration clarity.

Logging Improvements

• Added debug and information-level logging throughout the Lambda handler in Program.cs to trace key operations, including removing objects from the public bucket, scrubbing and copying files, fetching objects from the private bucket, performing the scrub pass, and uploading to the public bucket. [1] [2] [3] [4]

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Configuration used: Organization UI

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📥 Commits

Reviewing files that changed from the base of the PR and between 6b5a38b and f0a3965.

📒 Files selected for processing (2)

• docs-builder.slnx
• src/infra/docs-lambda-changelog-scrubber/Program.cs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/scrubber_timeout

• 🛠️ Update Documentation

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