fix(chat-pdf): update dependency pypdf to v4.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pypdf (changelog)	4.1.0 -> 4.2.0

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Release Notes

py-pdf/pypdf (pypdf)

v4.2.0

Compare Source

New Features (ENH)

• Allow multiple charsets for NameObject.read_from_stream (#​2585)
• Add support for /Kids in page labels (#​2562)
• Allow to update fields on many pages (#​2571)
• Tolerate PDF with invalid xref pointed objects (#​2335)
• Add Enforce from PDF2.0 in viewer_preferences (#​2511)
• Add += and -= operators to ArrayObject (#​2510)

Bug Fixes (BUG)

• Fix merge_page sometimes generating unknown operator 'QQ' (#​2588)
• Fix fields update where annotations are kids of field (#​2570)
• Process CMYK images without a filter correctly (#​2557)
• Extract text in layout mode without finding resources (#​2555)
• Prevent recursive loop in some PDF files (#​2505)

Robustness (ROB)

• Tolerate "truncated" xref (#​2580)
• Replace error by warning for EOD in RunLengthDecode/ASCIIHexDecode (#​2334)
• Rebuild xref table if one entry is invalid (#​2528)
• Robustify stream extraction (#​2526)

Documentation (DOC)

• Update release process for latest changes (#​2564)
• Encryption/decryption: Clone document instead of copying all pages (#​2546)
• Minor improvements (#​2542)
• Update annotation list (#​2534)
• Update references and formatting (#​2529)
• Correct threads reference, plus minor changes (#​2521)
• Minor readability increases (#​2515)
• Simplify PaperSize examples (#​2504)
• Minor improvements (#​2501)

Developer Experience (DEV)

• Remove unused dependencies (#​2572)
• Remove page labels PR link from message (#​2561)
• Fix changelog generator regarding whitespace and handling of "Other" group (#​2492)
• Add REL to known PR prefixes (#​2554)
• Release using the REL commit instead of git tag (#​2500)
• Unify code between PdfReader and PdfWriter (#​2497)
• Bump softprops/action-gh-release from 1 to 2 (#​2514)

Maintenance (MAINT)

• Ressources → Resources (and internal name childs) (#​2550)
• Fix typos found by codespell (#​2549)
• Update Read the Docs configuration (#​2538)
• Add root_object, _info and _ID to PdfReader (#​2495)

Testing (TST)

• Allow loading truncated images if required (#​2586)
• Fix download issues from #​2562 (#​2578)
• Improve test_get_contents_from_nullobject to show real use-case (#​2524)
• Add missing test annotations (#​2507)

Full Changelog

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[github-actions]

🎉 This PR is included in version 1.108.0 🎉

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