Add i18n support for vulnerability export

What does this MR do and why?

Describe in detail what your merge request does and why.

Add i18n support for vulnerability export. The language of vulnerability report's header will change according to the user's preferred language.

Screenshots or screen recordings

When customize language is English

When customize language is Chinese

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.