Update dependency PyPDF2 to <=2.10.4

This MR contains the following updates:

Package	Update	Change
PyPDF2 (source, changelog)	patch	<=2.10.3 -> <=2.10.4

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Release Notes

py-pdf/PyPDF2

v2.10.4

Compare Source

Robustness (ROB)

• Fix errors/warnings on no /Resources within extract_text (#​1276)
• Add required line separators in ContentStream ArrayObjects (#​1281)

Maintenance (MAINT)

• Use NameObject idempotency (#​1290)

Testing (TST)

• Rectangle deletion (#​1289)
• Add workflow tests (#​1287)
• Remove files after tests ran (#​1286)

Packaging (PKG)

• Add minimum version for typing_extensions requirement (#​1277)

Full Changelog: https://github.com/py-pdf/PyPDF2/compare/2.10.3...2.10.4

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