chore: bump version to 2.20.2 in package.json and update captcha integration across auth components (#405)

- Incremented application version from 2.20.1 to 2.20.2 in package.json.
- Added captchaSiteKey prop to SignUpPage for enhanced security.
- Refactored captcha field rendering in various authentication components to ensure consistent placement and functionality.

apps/web/app/auth/sign-up/page.tsx

@@ -40,6 +40,7 @@ async function SignUpPage() {
         providers={authConfig.providers}
         displayTermsCheckbox={authConfig.displayTermsCheckbox}
         paths={paths}
+        captchaSiteKey={authConfig.captchaTokenSiteKey}
       />
 
       <div className={'flex justify-center'}>