chore: v0.18.0 (#504)

Author: sfleen

Cargo.lock

@@ -409,7 +409,7 @@ checksum = "58f929b4d672ea937a23a1ab494143d968337a5f47e56d0815df1e0890ddf174"
 
 [[package]]
 name = "linkerd2-proxy-api"
-version = "0.17.0"
+version = "0.18.0"
 dependencies = [
  "h2",
  "http",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "linkerd2-proxy-api"
-version = "0.17.0"
+version = "0.18.0"
 authors = ["Linkerd Developers <[email protected]>"]
 license = "Apache-2.0"
 edition = "2021"