chore(deps-dev): update pypdf requirement from >=6.12.1 to >=6.14.2

[dependabot]

Updates the requirements on pypdf to permit the latest version.

Release notes

Sourced from pypdf's releases.

Version 6.14.2, 2026-06-23

What's new

Security (SEC)

• Avoid infinite loops for incomplete ASCII85 and ASCIIHex inline images (#3892) by @​stefan6419846

Full Changelog

Changelog

Sourced from pypdf's changelog.

Version 6.14.2, 2026-06-23

Security (SEC)

• Avoid infinite loops for incomplete ASCII85 and ASCIIHex inline images (#3892)

Full Changelog

Version 6.14.1, 2026-06-23

Security (SEC)

• Detect end of stream during inline image end marker detection (#3891)

Full Changelog

Version 6.14.0, 2026-06-22

Security (SEC)

• Apply general limit for requested image size (#3888)
• Speed up recovery when reading broken cross-reference table (#3887)

New Features (ENH)

• Check whether image is displayed on a given page (#3738)

Robustness (ROB)

• Several fixes

Full Changelog

Version 6.13.3, 2026-06-17

Security (SEC)

• Apply MAX_DECLARED_STREAM_LENGTH to streams without length as well (#3871)

Performance Improvements (PI)

• Avoid per-pixel getpixel loop for 1-bit indexed images (#3854)

Robustness (ROB)

• Several fixes

Maintenance (MAINT)

• Make mypy assert messages consistent (#3849)

Full Changelog

Version 6.13.2, 2026-06-10

Security (SEC)

• Detect multi-hop cyclic /Pages trees in _flatten to prevent SIGSEGV (#3847)

Robustness (ROB)

... (truncated)

Commits

• 2266ee8 REL: 6.14.2
• 5a33a46 SEC: Avoid infinite loops for incomplete ASCII85 and ASCIIHex inline images (...
• 1ee4e58 REL: 6.14.1
• ec3b145 SEC: Detect end of stream during inline image end marker detection (#3891)
• c6cd82e ROB: Tolerate malformed inline image settings in _read_inline_image (#3889)
• 0ae42ba ROB: Tolerate malformed page label entries in get_label_from_nums (#3884)
• 50617b5 ROB: Tolerate malformed Tm operand count in extract_text (#3877)
• 86e5a82 MAINT: Improve readability (#3874)
• 83cb25f DEV: Fix sample files commit
• 06588ec REL: 6.14.0
• Additional commits viewable in compare view

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.