Fix doctests and bump version (#11)

Author: kflansburg

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "k8s-cri"
-version = "0.7.0"
+version = "0.8.0"
 license = "Apache-2.0"
 authors = ["kflansburg <kevin.flansburg@gmail.com>"]
 categories = ["api-bindings"]
@@ -22,5 +22,5 @@ default-features = false
 features = ["prost", "transport"]
 
 [dev-dependencies]
-tokio = { version = "1.21", features = [ "rt-multi-thread" ] }
+tokio = { version = "1.37", features = [ "rt-multi-thread", "macros" ] }
 tower = "0.4"