Handle tests.utils.test_to_from_dict conflict with other test runners

[namannimmo10]

Related Issue(s):
Fixes #387

Description:
Modifies def test_to_from_dict in tests/utils/__init__.py to def assert_to_from_dict to avoid conflict with other test runners

PR Checklist:

• Code is formatted (run scripts/format)
• Tests pass (run scripts/test)
• This PR maintains or improves overall codebase code coverage.
• Changes are added to the CHANGELOG. See the docs for information about adding to the changelog.

[duckontheweb]

Looks like there are some places where the function name still needs to be updated.

From the CI logs:

tests/test_item.py:14: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_view.py:6: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_timestamps.py:8: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_raster.py:15: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_projection.py:9: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_pointcloud.py:16: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_label.py:19: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_file.py:5: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]
tests/extensions/test_eo.py:9: error: Module 'tests.utils' has no attribute 'test_to_from_dict'; maybe "assert_to_from_dict"?  [attr-defined]