[VIRTS-3040] Fix Timestamp Error in Sources API Tests

[bleepbop]

Description

In test_sources_api.py, test_update_source was failing due to differing timestamps. The test has been updated to mock datetime, ensuring that the timestamps will be equal.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Verified tests passed for multiple versions of python with tox.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• [NA] I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov]

Codecov Report

Merging #2328 (2e7be3b) into master (9ab1527) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2328   +/-   ##
=======================================
  Coverage   72.62%   72.62%           
=======================================
  Files         110      110           
  Lines        7942     7942           
=======================================
  Hits         5768     5768           
  Misses       2174     2174           

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