Upgrade libz-sys to 1.1.2

Author: shepmaster

Cargo.lock

@@ -1657,9 +1657,9 @@ dependencies = [
 
 [[package]]
 name = "libz-sys"
-version = "1.0.27"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ca8894883d250240341478bf987467332fbdd5da5c42426c69a8f93dbc302f2"
+checksum = "602113192b08db8f38796c4e85c39e960c145965140e918018bcde1952429655"
 dependencies = [
  "cc",
  "libc",