Add missing direct dependencies

[benoit74]

Fix #226

I did not found more direct dependencies than what was listed in the issue.

Remarks:

• for pillow, I confirmed 7.0.0 is ok (tests are green) but last 6.x is not
• for urllib3, 1.26.5 is a minimum for tests to test ; they introduce breaking changes in minor so I restricted to < 2.3 ... to be updated regularly obviously
• for pixexif, I pinned a version like optimize-image did, this is a nightmare otherwise
• for idna, the range is relatively wide open, even if recent versions mention official support of Python 3.12 ... since tests are OK, I feel like it is ok to use an old version if someone needs it

I checked other deps and no update (widening of upper bound) is needed since no newer version exist

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (5f71a29) to head (9a32a85).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #233   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           39        39           
  Lines         2455      2455           
  Branches       331       331           
=========================================
  Hits          2455      2455           

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