Upgrade dependent version: github.com/open-policy-agent/opa (#5315)

Upgrade dependent version: github.com/open-policy-agent/opa v0.18.0 -> v0.45.0

Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io>

Signed-off-by: hongzhouzi <hongzhouzi@kubesphere.io>

vendor/github.com/open-policy-agent/opa/internal/deepcopy/deepcopy.go

@@ -0,0 +1,31 @@
+// Copyright 2020 The OPA Authors.  All rights reserved.
+// Use of this source code is governed by an Apache2
+// license that can be found in the LICENSE file.
+
+package deepcopy
+
+// DeepCopy performs a recursive deep copy for nested slices/maps and
+// returns the copied object. Supports []interface{}
+// and map[string]interface{} only
+func DeepCopy(val interface{}) interface{} {
+	switch val := val.(type) {
+	case []interface{}:
+		cpy := make([]interface{}, len(val))
+		for i := range cpy {
+			cpy[i] = DeepCopy(val[i])
+		}
+		return cpy
+	case map[string]interface{}:
+		return Map(val)
+	default:
+		return val
+	}
+}
+
+func Map(val map[string]interface{}) map[string]interface{} {
+	cpy := make(map[string]interface{}, len(val))
+	for k := range val {
+		cpy[k] = DeepCopy(val[k])
+	}
+	return cpy
+}