build(deps): bump github.com/open-policy-agent/opa from 1.10.1 to 1.11.0

Bumps [github.com/open-policy-agent/opa](https://github.com/open-policy-agent/opa) from 1.10.1 to 1.11.0.
- [Release notes](https://github.com/open-policy-agent/opa/releases)
- [Changelog](https://github.com/open-policy-agent/opa/blob/main/CHANGELOG.md)
- [Commits](https://github.com/open-policy-agent/opa/compare/v1.10.1...v1.11.0)

---
updated-dependencies:
- dependency-name: github.com/open-policy-agent/opa
  dependency-version: 1.11.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/vektah/gqlparser/v2/ast/directive.go

@@ -39,5 +39,8 @@ type Directive struct {
 }
 
 func (d *Directive) ArgumentMap(vars map[string]interface{}) map[string]interface{} {
+	if d.Definition == nil {
+		return nil
+	}
 	return arg2map(d.Definition.Arguments, d.Arguments, vars)
 }

vendor/github.com/vektah/gqlparser/v2/ast/selection.go

@@ -37,5 +37,8 @@ type Argument struct {
 }
 
 func (f *Field) ArgumentMap(vars map[string]interface{}) map[string]interface{} {
+	if f.Definition == nil {
+		return nil
+	}
 	return arg2map(f.Definition.Arguments, f.Arguments, vars)
 }

vendor/github.com/vektah/gqlparser/v2/ast/value.go

@@ -29,9 +29,10 @@ type Value struct {
 	Comment  *CommentGroup
 
 	// Require validation
-	Definition         *Definition
-	VariableDefinition *VariableDefinition
-	ExpectedType       *Type
+	Definition             *Definition
+	VariableDefinition     *VariableDefinition
+	ExpectedType           *Type
+	ExpectedTypeHasDefault bool
 }
 
 type ChildValue struct {

vendor/github.com/vektah/gqlparser/v2/validator/core/walk.go

@@ -182,6 +182,7 @@ func (w *Walker) walkValue(value *ast.Value) {
 				fieldDef := value.Definition.Fields.ForName(child.Name)
 				if fieldDef != nil {
 					child.Value.ExpectedType = fieldDef.Type
+					child.Value.ExpectedTypeHasDefault = fieldDef.DefaultValue != nil && fieldDef.DefaultValue.Kind != ast.NullValue
 					child.Value.Definition = w.Schema.Types[fieldDef.Type.Name()]
 				}
 			}
@@ -208,6 +209,7 @@ func (w *Walker) walkValue(value *ast.Value) {
 func (w *Walker) walkArgument(argDef *ast.ArgumentDefinition, arg *ast.Argument) {
 	if argDef != nil {
 		arg.Value.ExpectedType = argDef.Type
+		arg.Value.ExpectedTypeHasDefault = argDef.DefaultValue != nil && argDef.DefaultValue.Kind != ast.NullValue
 		arg.Value.Definition = w.Schema.Types[argDef.Type.Name()]
 	}
 

vendor/github.com/vektah/gqlparser/v2/validator/rules/rules.go

@@ -77,6 +77,7 @@ func (r *Rules) AddRule(name string, ruleFunc core.RuleFunc) {
 
 // GetInner returns the internal rule map.
 // If the map is not initialized, it returns an empty map.
+// This returns a copy of the rules map, not the original map.
 func (r *Rules) GetInner() map[string]core.RuleFunc {
 	if r == nil {
 		return nil // impossible nonsense, hopefully
@@ -84,7 +85,13 @@ func (r *Rules) GetInner() map[string]core.RuleFunc {
 	if r.rules == nil {
 		return make(map[string]core.RuleFunc)
 	}
-	return r.rules
+
+	rules := make(map[string]core.RuleFunc)
+	for k, v := range r.rules {
+		rules[k] = v
+	}
+
+	return rules
 }
 
 // RemoveRule removes a rule with the specified name from the rule set.

vendor/github.com/vektah/gqlparser/v2/validator/rules/variables_in_allowed_position.go

@@ -25,6 +25,11 @@ var VariablesInAllowedPositionRule = Rule{
 				}
 			}
 
+			// If the expected type has a default, the given variable can be null
+			if value.ExpectedTypeHasDefault {
+				tmp.NonNull = false
+			}
+
 			if !value.VariableDefinition.Type.IsCompatible(&tmp) {
 				addError(
 					Message(