chore(deps): bump pdfbox version to 3.0.7

[balazs-szucs]

Description of Changes

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Checklist

General

• I have read the Contribution Guidelines
• I have read the Stirling-PDF Developer Guide (if applicable)
• I have read the How to add new languages to Stirling-PDF (if applicable)
• I have performed a self-review of my own code
• My changes generate no new warnings

Documentation

• I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
• I have read the section Add New Translation Tags (for new translation tags only)

Translations (if applicable)

• I ran scripts/counter_translation.py

UI Changes (if applicable)

• Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

Testing (if applicable)

• I have tested my changes locally. Refer to the Testing Guide for more details.

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[dosubot]

Related Documentation

1 document(s) may need updating based on files changed in this PR:

Stirling-PDF

How PDFBox Works Within Stirling-PDF

View Suggested Changes

@@ -131,6 +131,7 @@
 
 - **February 2026**: [Replaced mutool with pure PDFBox implementation for poster splitting](https://github.com/Stirling-Tools/Stirling-PDF/pull/5718), eliminating external binary dependencies
 - **January 2026**: [Added pdfbox-io dependency for proper I/O handling](https://github.com/Stirling-Tools/Stirling-PDF/pull/5379), improving resource management
+- **March 2026**: [Updated PDFBox from 3.0.6 to 3.0.7](https://github.com/Stirling-Tools/Stirling-PDF/pull/5923), incorporating bug fixes and stability improvements
 - **October 2025**: [Updated PDFBox from 3.0.5 to 3.0.6](https://github.com/Stirling-Tools/Stirling-PDF/pull/4713), incorporating bug fixes and stability improvements
 - **September 2025**: [Integrated PDFBox Preflight for PDF/A validation](https://github.com/Stirling-Tools/Stirling-PDF/pull/4595), later replaced by VeraPDF
 

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