aws lambda deploy-serverless command not updating Layer version when used with secrets manager

When trying to update an existing Lambda function with a Lambda Layer using _aws lambda deploy-serverless_ command, it fails to update the function with the latest layer version when the Layer ARN is fetched from AWS Secrets Manager. Creating a new function with the same command works fine. Issue is only when we do consecutive updates to the same function.

### Scenario
* Create a Lambda Function with Layer
* Update the Layer using _dotnet lambda publish-layer_ command.
* Now run _aws lambda deploy-serverless_ command by passing a serverless template. Example command below

```
dotnet lambda deploy-serverless -sb my-lambda-apps -t .\serverless.yaml -sn OrderProcessor
```
* serverless.yaml command has the Layer settings as below. Layer ARN is stored as a key/value pair in AWS Secrets Manager.
```
Layers:
- '{{resolve:secretsmanager:LambdaLayerSecretArn:SecretString:LambdaLayerSecretArn}}'
```
* When the Layer ARN is directly given as plain text in the .yaml file, there is no issue.

Start with the deploy-serverless command and the serverless.yaml Layer configuration, then trace how a Secrets Manager dynamic reference is handled during updates to an existing Lambda function. Reproduce consecutive layer updates with both the dynamic reference and a plain ARN. Done means the existing function receives the latest layer version when the ARN comes from Secrets Manager.

Written by the indexing model from the issue text.