Merge pull request #1167 from gtk-rs/dependabot/cargo/async-tls-0.12

build(deps): update async-tls requirement from 0.11 to 0.12

Author: sdroege

examples/Cargo.toml

@@ -17,7 +17,7 @@ path = "../glib"
 path = "../gio"
 
 [dependencies.async-tls]
-version = "0.11"
+version = "0.12"
 optional = true
 
 [build-dependencies.glib-build-tools]