refactor: migrate from drf_yasg to drf_spectacular for API documentation

[submarcos]

…ion (fix #5034)

Description

Related Issue

Checklist

• I have followed the guidelines in our Contributing document
• My code respects the Definition of done available in the Development section of the documentation
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes
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[cypress]

Geotrek-admin    Run #17728

Run Properties:   Passed #17728  •  75307fc8dc ℹ️: Merge 8d6d6b2a0a7f7eab89808f1ec0fc91b1bec55aed into 016b491eec0d9b833800da1accda...

Project	Geotrek-admin
Branch Review	refs/pull/5393/merge
Run status	Passed #17728
Run duration	01m 44s
Commit	75307fc8dc ℹ️: Merge 8d6d6b2a0a7f7eab89808f1ec0fc91b1bec55aed into 016b491eec0d9b833800da1accda...
Committer	Jean-Etienne Castagnede
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	22
View all changes introduced in this branch ↗︎

[codecov]

Codecov Report

❌ Patch coverage is 98.59155% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.54%. Comparing base (6f8f502) to head (8d6d6b2).
⚠️ Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
geotrek/api/v2/filters.py	98.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5393      +/-   ##
==========================================
- Coverage   98.54%   98.54%   -0.01%     
==========================================
  Files         274      274              
  Lines       23034    23036       +2     
==========================================
+ Hits        22699    22700       +1     
- Misses        335      336       +1     

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[submarcos]

wait for tfranzel/drf-spectacular#1428