Increasing unit test coverage

[sarthakpati]

Fixes #N.A.

Proposed Changes

• increasing test coverage
• one typo fixed
• using vips for resizing image in CI because it needed less resources compared to SimleITK/OpenCV/PIL/skimage - still won't use it in part of main repo
• "__main__" function in inference_loop is not needed, since InferenceManager is invoked from main_cli
• hash updated for dicomanonymizer which includes fix for generating random UID

Checklist

• I have read the CONTRIBUTING guide
• My PR is based from the current GaNDLF master
• Non-breaking change (does not break existing functionality): provide as many details as possible for any breaking change
• Function/class source code documentation added/updated
• Code has been blacked for style consistency
• If applicable, version information has been updated in GANDLF/version.py
• If adding a git submodule, add to list of exceptions for black styling in pyproject.toml file
• Usage documentation has been updated, if appropriate
• History has been updated, if appropriate
• Tests added or modified to cover the changes; if coverage is reduced, please give explanation
• If customized dependency installation is required (i.e., a separate pip install step is needed for PR to be functional), please ensure it is reflected in all the files that control the CI, namely: python-test.yml, and all docker files [1,2,3,4]

[codecov]

Codecov Report

Merging #487 (2706321) into master (b0f91d0) will increase coverage by 0.60%.
The diff coverage is 93.67%.

@@            Coverage Diff             @@
##           master     #487      +/-   ##
==========================================
+ Coverage   92.47%   93.07%   +0.60%     
==========================================
  Files         105      104       -1     
  Lines        6459     6472      +13     
==========================================
+ Hits         5973     6024      +51     
+ Misses        486      448      -38     

Flag	Coverage Δ
unittests	93.07% <93.67%> (+0.60%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
testing/test_full.py	97.97% <93.05%> (-0.09%)	⬇️
GANDLF/compute/inference_loop.py	91.39% <100.00%> (+7.14%)	⬆️
GANDLF/compute/training_loop.py	82.19% <100.00%> (ø)
GANDLF/data/post_process/tensor.py	100.00% <100.00%> (+13.33%)	⬆️
testing/conftest.py
...NDLF/data/preprocessing/template_matching/utils.py	97.67% <0.00%> (+2.32%)	⬆️
GANDLF/data/post_process/morphology.py	100.00% <0.00%> (+3.84%)	⬆️
GANDLF/training_manager.py	88.99% <0.00%> (+4.58%)	⬆️
GANDLF/cli/main_run.py	84.61% <0.00%> (+20.51%)	⬆️
GANDLF/anonymize/__init__.py	100.00% <0.00%> (+26.08%)	⬆️

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