Stop using flask-pydantic-spec. (PP-1656)

[tdilauro]

Description

Stop using flask-pydantic-spec.

Motivation and Context

The flask-pydantic-spec package does not appear to be actively maintained and it is blocking an upgrade to Pydantic V2.

[Jira PP-1656]

How Has This Been Tested?

• Some local manual testing.
• All tests pass locally.
• CI for associated branch passes.

Checklist

• N/A - I have updated the documentation accordingly.
• All new and existing tests passed.

[codecov]

Codecov Report

Attention: Patch coverage is 90.47619% with 2 lines in your changes missing coverage. Please review.

Project coverage is 90.59%. Comparing base (4456985) to head (100017d).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
src/palace/manager/util/flask_util.py	85.71%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2014      +/-   ##
==========================================
- Coverage   90.63%   90.59%   -0.04%     
==========================================
  Files         339      338       -1     
  Lines       40210    40135      -75     
  Branches     8702     8681      -21     
==========================================
- Hits        36443    36361      -82     
- Misses       2494     2508      +14     
+ Partials     1273     1266       -7     

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[jonathangreen]

🎉 Looks good!