Remove deprecated trim package dependency

[FenPWysocki]

Changes

Removes the deprecated trim@1.0.1 npm package and replaces all usages with the native String.prototype.trim() method.

• Removed trim from dependencies in package.json
• Replaced all trim() function calls with .trim() method across source files:
  • src/field/index.js
  • src/field/username.js
  • src/field/mfa_code.js
  • src/field/email.js
  • src/core/index.js
  • src/connection/database/index.js
  • src/avatar/gravatar_provider.js

References

Resolves npm deprecation warning: npm warn deprecated trim@1.0.1: Use String.prototype.trim() instead

Testing

• All existing tests pass
• No breaking changes - functionality remains identical as String.prototype.trim() is a native, widely-supported browser API

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All code quality tools/guidelines have been run/followed