Consolidate dependency updates to latest versions

[Copilot]

Consolidates multiple pending dependency update PRs (#18, #20, #22, #25, #26, #27, #28, #29, #30) into a single atomic update.

Updated Dependencies

Security & HTTP

• certifi: 2025.10.5 → 2025.11.12 (updated CA bundle)
• urllib3: 2.5.0 → 2.6.1
• aiohttp: 3.13.1 → 3.13.2

Platform Integrations

• atproto: 0.0.63 → 0.0.65 (BlueSky)
• beautifulsoup4: 4.14.2 → 4.14.3
• protobuf: 6.33.0 → 6.33.2

Secrets Management

• boto3: 1.40.60 → 1.42.5 (AWS)
• hvac: 2.3.0 → 2.4.0 (Vault)

All updates are patch/minor releases with no breaking changes. Security scan confirms no vulnerabilities in updated dependencies.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Dependency update</issue_title>
<issue_description>Referring to #18 #20 #22 #25 #26 #27 #28 #29 #30 need to update dependencies for the project to ensure it's all up to date and push in a single update rather than multiple pulls</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Dependency update #31

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