Fixing Deprecation Warning

[shahidee44]

Description

• Updated dictionary selector to select method for importlib entry_points function.

Checklist

• I have performed a self-review of my code.
• I have commented my code and used numpy-style docstrings
• I have made corresponding updates to the documentation.
• My changes generate no new warnings
• I have added/updated tests to make sure bugfix/feature works.
• New and existing unit tests pass locally with my changes.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Name the new unit-tests that you have added along with this change.

[codecov]

Codecov Report

Merging #219 (945ae3f) into dev (3278e64) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #219   +/-   ##
=======================================
  Coverage   97.72%   97.72%           
=======================================
  Files          37       37           
  Lines        6771     6771           
=======================================
  Hits         6617     6617           
  Misses        154      154           

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