fix: remove composite restrictions (#1128)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

pkg/runner/action.go

@@ -364,13 +364,6 @@ func execAsComposite(step actionStep, containerActionDir string) common.Executor
 	action := step.getActionModel()
 
 	return func(ctx context.Context) error {
-		// Disable some features of composite actions, only for feature parity with github
-		for _, compositeStep := range action.Runs.Steps {
-			if err := compositeStep.Validate(rc.Config.CompositeRestrictions); err != nil {
-				return err
-			}
-		}
-
 		eval := rc.NewExpressionEvaluator()
 
 		inputs := make(map[string]interface{})