Use pydicom.dcmread() instead of pydicom.read_file()

[jwodder]

read_file() was deprecated in pydicom v2.2.0 and will be removed in v3.0. Code should instead use dcmread(), which has been an alias of read_file() since pydicom v1.0.0.

[codecov]

Codecov Report

Patch coverage: 75.00% and no project coverage change.

Comparison is base (2c6d228) 81.48% compared to head (37d5973) 81.48%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #668   +/-   ##
=======================================
  Coverage   81.48%   81.48%           
=======================================
  Files          41       41           
  Lines        3900     3900           
=======================================
  Hits         3178     3178           
  Misses        722      722           

Impacted Files	Coverage Δ
heudiconv/heuristics/multires_7Tbold.py	14.28% <0.00%> (ø)
heudiconv/tests/test_regression.py	93.25% <ø> (ø)
heudiconv/bids.py	90.51% <100.00%> (ø)
heudiconv/dicoms.py	86.10% <100.00%> (ø)
heudiconv/tests/test_dicoms.py	86.04% <100.00%> (ø)

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[yarikoptic]

Thank you!

[github-actions]

🚀 PR was released in v0.13.0 🚀