What is the problem?

After updating Amazon.CDK.Lib from 2.3.0 to 2.12.0 the LambdaInvokeAction fails to synthesize.

Reproduction Steps

Run CDK synth of the following code:

var changeVersionLambda = Function.FromFunctionArn(this, "changeVersionLambda", changeVersionLambdaArn);

new Amazon.CDK.AWS.CodePipeline.StageProps
{
      StageName = "Deploy_Test",
      Actions = new IAction[]
      {
          new LambdaInvokeAction(new LambdaInvokeActionProps() {
              ActionName = "Populate_Parameters",
              Lambda = changeVersionLambda,
              UserParameters = new Dictionary<string, object>
              {
                  ["component"] = "service",
                  ["environment"] = PlatformEnvironment.Test.ToString(),
                  ["version"] = nodeServiceBuildAction.Variable("NEW_VERSION")
              }
          })
      }
}

What did you expect to happen?

CDK synth executes successfully.

What actually happened?

CDK synth fails.

Exception: Amazon.JSII.Runtime.JsiiException: The 'account' property must be a concrete value (action: 'Populate_Version_Parameters')

CDK CLI Version

2.12.0

Framework Version

No response

Node.js Version

v14.17.0

OS

Windows

Language

.NET

Language Version

No response

Other information

No response