Use any instead of interface{}

The keyword is available since Go 1.18 (see
https://pkg.go.dev/builtin#any).

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

libcontainer/configs/config.go

@@ -503,7 +503,7 @@ func (hooks *Hooks) MarshalJSON() ([]byte, error) {
 		return serializableHooks
 	}
 
-	return json.Marshal(map[string]interface{}{
+	return json.Marshal(map[string]any{
 		"prestart":        serialize((*hooks)[Prestart]),
 		"createRuntime":   serialize((*hooks)[CreateRuntime]),
 		"createContainer": serialize((*hooks)[CreateContainer]),