Upgrade to fast-xml-parser 5.3.0

*5.3.0 / 2025-10-03*

• Use `Uint8Array` in place of `Buffer` in Parser

*5.2.5 / 2025-06-08*

• Inform user to use [fxp-cli](https://github.com/NaturalIntelligence/fxp-cli) instead of in-built CLI feature
• Export typings for direct use