Rust library for generating latest browser user agent.
Currently supports Firefox on Linux x86 64-bit and Windows x86 64-bit. It gets the latest number from header of the https://www.mozilla.org/en-US/firefox/new/ page.
The returned user agent looks like Mozilla/5.0 (X11; Linux x86_64; rv:103.0) Gecko/20100101 Firefox/103.0.