feat(BREAKING): change inspector API to match new V8 API (#1196)

Adjusts inspector API usage to changes from
denoland/rusty_v8#1853.

The main change is `Rc<JsRuntimeInspector>` instead of
`Rc<RefCell<JsRuntimeInspector>>`. Using inspector
no longer requires mutable references.

Author: bartlomieju

Cargo.lock

@@ -28,7 +28,7 @@ deno_error = { version = "0.7.0", features = ["serde_json", "serde", "url", "tok
 deno_ops = { version = "0.235.0", path = "./ops" }
 deno_unsync = "0.4.2"
 serde_v8 = { version = "0.268.0", path = "./serde_v8" }
-v8 = { version = "140.0.0", default-features = false }
+v8 = { version = "140.1.1", default-features = false }
 
 anyhow = "1"
 bencher = "0.1"