fix: configuration and performance fixes via upgrade of packages

[dolfim-ibm]

Relevant Docling updates:

• Clean up resources with docling-parse v4, no parsed_page output by default (perf: Clean up resources with docling-parse v4, no parsed_page output by default docling#2105)
• New code formula model (feat: new code formula model docling#2042)

Relevant Docling Jobkit updates:

• Propagate allow_external_plugins (fix: propagate allow_external_plugins docling-jobkit#50)

Issue resolved by this Pull Request:
Resolves #325

[github-actions]

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[dosubot]

Documentation updates
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