Update dependency pypdf to v3.16.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pypdf (changelog)	==3.16.2 -> ==3.16.4

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Release Notes

py-pdf/pypdf (pypdf)

v3.16.4

Compare Source

Bug Fixes (BUG)

• Avoid exceeding recursion depth when retrieving image mode (#​2251)

Full Changelog

v3.16.3

Compare Source

Bug Fixes (BUG)

• Invalid cm/tm in visitor functions (#​2206)
• Encrypt / decrypt Stream object dictionaries (#​2228)
• Support nested color spaces for the /DeviceN color space (#​2241)
• Images property fails if NullObject in list (#​2215)

Developer Experience (DEV)

• Unify mypy options and warn redundant workarounds (#​2223)

Full Changelog

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Configuration

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[codecov]

Codecov Report

Merging #1834 (3a24f48) into master (4cb0bb5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1834   +/-   ##
=======================================
  Coverage   77.73%   77.73%           
=======================================
  Files         127      127           
  Lines        5268     5268           
=======================================
  Hits         4095     4095           
  Misses       1173     1173           

Flag	Coverage Δ
unittests	77.73% <ø> (ø)

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