Update dependency PyPDF2 to <=2.10.1

This MR contains the following updates:

Package	Update	Change
PyPDF2 (source, changelog)	patch	<=2.10.0 -> <=2.10.1

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Release Notes

py-pdf/PyPDF2

v2.10.1

Compare Source

Bug Fixes (BUG)

• TreeObject.remove_child had a non-PdfObject assignment for Count (#​1233, #​1234)
• Fix stream truncated prematurely (#​1223)

Documentation (DOC)

• Fix docstring formatting (#​1228)

Maintenance (MAINT)

• Split generic.py (#​1229)

Testing (TST)

• Decrypt AlgV4 with owner password (#​1239)
• AlgV5.generate_values (#​1238)
• TreeObject.remove_child / empty_tree (#​1235, #​1236)
• create_string_object (#​1232)
• Free-Text annotations (#​1231)
• generic._base (#​1230)
• Strict get fonts (#​1226)
• Increase PdfReader coverage (#​1219, #​1225)
• Increase PdfWriter coverage (#​1237)
• 100% coverage for utils.py (#​1217)
• PdfWriter exception non-binary stream (#​1218)
• Don't check coverage for deprecated code (#​1216)

Full Changelog: https://github.com/py-pdf/PyPDF2/compare/2.10.0...2.10.1

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