Add support for setting captcha_widget_theme in BrandingTheme Struct in BrandingThemeManager

[duedares-rvj]

🔧 Changes

• Added support for setting captcha_widget_theme in BrandingTheme.
• Introduced a new field in the BrandingTheme struct:

  CaptchaWidgetTheme string `json:"captcha_widget_theme"`

• This field has been added under BrandingThemeColors in BrandingThemeManager.
• Allows customization of the Captcha widget theme for branding.

📚 References

• Auth0 Branding API Documentation]

🔬 Testing

• Ensure the captcha_widget_theme field is correctly serialized/deserialized in the BrandingTheme struct.
• Validate that updating the branding theme successfully applies the Captcha widget theme customization.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.47%. Comparing base (553f3e5) to head (4b656bc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #492   +/-   ##
=======================================
  Coverage   95.47%   95.47%           
=======================================
  Files          56       56           
  Lines       10921    10921           
=======================================
  Hits        10427    10427           
  Misses        373      373           
  Partials      121      121           

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[developerkunal]

LGTM