fix(api): Remove regex check for autoscaling target in autogenerated files

[deadlycoconuts]

Context

Previously in #380, the autoscaling target was refactored to allow strings with decimal places. However, this wasn't exposed (unintentionally) because the autogenerated Go/Python files from the OpenAPI specs weren't updated. This PR removes the regex check (which had previously only allowed integers as target values) in the OpenAPI specs and updates all the necessary Go/Python files as a result of that change.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.07%. Comparing base (4f1cbd2) to head (3365235).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #385      +/-   ##
==========================================
+ Coverage   62.27%   68.07%   +5.79%     
==========================================
  Files         124      149      +25     
  Lines        9774    11809    +2035     
==========================================
+ Hits         6087     8039    +1952     
- Misses       2949     3032      +83     
  Partials      738      738              

Flag	Coverage Δ
api-test	62.27% <ø> (ø)
sdk-test-3.10	95.92% <ø> (?)
sdk-test-3.8	95.92% <ø> (?)
sdk-test-3.9	95.92% <ø> (?)

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