Fix version metadata bug

[solomon-negusse]

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Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

in version metadata, date validation error is ignored

What is the new behavior?

Raise 422 http error when date fields fail validation

Does this introduce a breaking change?

• Yes
• No

Other information

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.12%. Comparing base (7f2be86) to head (6f89964).

Files	Patch %	Lines
app/models/pydantic/metadata.py	66.66%	1 Missing ⚠️

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #580      +/-   ##
===========================================
- Coverage    81.15%   81.12%   -0.04%     
===========================================
  Files          128      128              
  Lines         5820     5821       +1     
===========================================
- Hits          4723     4722       -1     
- Misses        1097     1099       +2     

Flag	Coverage Δ
unittests	81.12% <66.66%> (-0.04%)	⬇️

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