Update to v0.12.0 (#63)

Change updates the library to `0.12.0` to include the ResponseHeaderModifier filter.

Signed-off-by: Alex Leong <[email protected]>

Author: adleong

Cargo.toml

@@ -3,7 +3,7 @@ members = [".", "integration"]
 
 [package]
 name = "k8s-gateway-api"
-version = "0.11.0"
+version = "0.12.0"
 edition = "2021"
 license = "Apache-2.0"
 repository = "https://github.com/linkerd/k8s-gateway-api"