WinPTY-rs release v0.3.12

Minor maintenance release of WinPTY-rs, it updates windows-rs to the v0.48.0 version.

What's Changed

• Update windows requirement from 0.43.0 to 0.44.0 by @dependabot in #48
• Update windows-rs to v0.48.0 by @andfoy in #58

Full Changelog: v0.3.11...v0.3.12