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# Type of request: This is a ...

[x] bug report
[ ] feature request

# Detailed description

When using java-aws-sdk `CreateFunctionRequest` and `UpdateFunctionCodeRequest` with `publish` flag set to `true` should publish new version of lambda function. When I tried such operations against localstack container in version `localstack/localstack:0.11.2` those operations didn't publish new function version.

## Expected behavior

`CreateFunctionResponse` nad `UpdateFunctionCodeResponse` when `publish` flag is set to `true` will return under `version` field new version of changed AWS lambda function.

## Actual behavior

Even flag `publish` is set to `true`, above operations responses return in version `$LATEST` value what indicate that operation didn't produce new function version

# Steps to reproduce
- check available versions of given function
- create function or update existing with `publish` flag set to `true`
```
CreateFunctionRequest.builder
      .functionName(functionName)
      .runtime(runtimeName)
      .handler(handlerName)
      .layers(functionLayers)
      .role(lambdaExecutionRole)
      .tags(cdsLambdaTags)
      .memorySize(memorySize)
      .code(functionCode)
      .publish(true)
      .build
//or
UpdateFunctionCodeRequest.builder()
      .functionName(functionName)
      .zipFile(functionCode.zipFile())
      .publish(true)
      .build()
```
- check available versions of given function

## Command used to start LocalStack

Used testcontainers java localstack library.

## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)

```
CreateFunctionRequest.builder
      .functionName(functionName)
      .runtime(runtimeName)
      .handler(handlerName)
      .layers(functionLayers)
      .role(lambdaExecutionRole)
      .tags(cdsLambdaTags)
      .memorySize(memorySize)
      .code(functionCode)
      .publish(true)
      .build
//or
UpdateFunctionCodeRequest.builder()
      .functionName(functionName)
      .zipFile(functionCode.zipFile())
      .publish(true)
      .build()
```
data = json.loads(request.data)
    signing_profile_version_arns = data.get('AllowedPublishers').get('SigningProfileVersionArns')
    code_signing_id = 'csc-%s' % long_uid().replace('-', '')[0:17]
    arn = aws_stack.code_signing_arn(code_signing_id)
    ARN_TO_CODE_SIGNING_CONFIG[arn] = CodeSigningConfig(arn, code_signing_id, signing_profile_version_arns)
    code_signing_obj = ARN_TO_CODE_SIGNING_CONFIG[arn]
    if data.get('Description'):
        code_signing_obj.description = data['Description']
    if data.get('CodeSigningPolicies', {}).get('UntrustedArtifactOnDeployment'):
        code_signing_obj.untrusted_artifact_on_deployment = data['CodeSigningPolicies']['UntrustedArtifactOnDeployment']
    code_signing_obj.last_modified = isoformat_milliseconds(datetime.utcnow()) + '+0000'
    result = {
        'CodeSigningConfig': {
            'AllowedPublishers': {
                'SigningProfileVersionArns': code_signing_obj.signing_profile_version_arns
            },
            'CodeSigningConfigArn': code_signing_obj.arn,
            'CodeSigningConfigId': code_signing_obj.id,
            'CodeSigningPolicies': {
                'UntrustedArtifactOnDeployment': code_signing_obj.untrusted_artifact_on_deployment
            },
            'Description': code_signing_obj.description,
            'LastModified': code_signing_obj.last_modified
        }
    }
    return Response(json.dumps(result), status=201)
@app.route('/2020-04-22/code-signing-configs/<arn>', methods=['GET'])
def get_code_signing_config(arn):