Bump libz-sys from 1.0.25 to 1.1.2
Bump libz-sys from 1.0.25 to 1.1.2

Bumps [libz-sys](https://github.com/rust-lang/libz-sys) from 1.0.25 to 1.1.2.
- [Release notes](https://github.com/rust-lang/libz-sys/releases)
- [Commits](https://github.com/rust-lang/libz-sys/compare/1.0.25...1.1.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo