Update aws-sdk-net monorepo

[thomhurst]

This PR contains the following updates:

Package	Change	Age	Confidence
AWSSDK.Lambda	4.0.104.3 → 4.0.105
AWSSDK.S3	4.0.101.5 → 4.0.101.6

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This PR has been generated by Mend Renovate.

[claude]

Code review

This is an automated Renovate dependency-bump PR touching only Directory.Packages.props:

• AWSSDK.Lambda: 4.0.104.3 → 4.0.105
• AWSSDK.S3: 4.0.101.5 → 4.0.101.6

Both are patch-level version bumps to centrally-managed package versions, with no source code changes. No bugs, architectural concerns, or CLAUDE.md violations to flag — this looks safe to merge pending CI.