Cannot deserialize value of type `java.lang.String` from Object value

*To help us debug your issue fill in the basic information below using the options provided*

*Serverless Java Container version*: `2.0.1`

*Implementations:* `Spring Boot`

*Framework version:* `SpringBoot 3.2.4`

*Frontend service:* `REST API`

*Deployment method:* `Serverless Framework`

## Scenario
*Describe what you are trying to accomplish*

Hello I am creating a lambda function for my service. when I try to call my post API with the json body from lambda test console it is not able to deserialize it into the object which is defined in my code

## Expected behavior
*Describe how you would expect the application to behave*
When I pass the body as json input it should get deserialized and consumed in my spring boot application

## Actual behavior
*Describe what you are seeing instead*
It is throwing `java.lang.String` from Object value

## Steps to reproduce
*Provide code samples we can use to reproduce the issue as part of our integration tests. If there is a public repository for the misbehaving application link to it here

Below is the test input given
```
{
"resource": "/{proxy+}",
"path": "/api/v1/inference",
"body": {
"model":"sketch",
"sketch":{
"params": {
"seed": 12345,
"max_seq_length": 512,
"temperature": 1.0,
"top_k": 1.0,
"top_p": 0.5
},
"sketch": {
"version": "4.0.0",
"metadata": {
"parent_project": "simple_11f5627d",
"document_name": "Untitled",
"component_name": "Untitled",
"component_hierarchy": []
},
"name": "Test1",
"type": "Sketch"
}
}
},
"headers": {
"Authorization": "Bearer "
},
"httpMethod": "POST",
"requestContext": {

}
}
```

`StreamLambdaHandler`
```
public class StreamLambdaHandler implements RequestStreamHandler {
private static final Logger logger = LoggerFactory.getLogger(StreamLambdaHandler.class);

private static final SpringBootLambdaContainerHandler handler;
static {
try {
logger.info("Initializing SpringBootLambdaContainerHandler"+AwsProxyRequest.class);
handler = SpringBootLambdaContainerHandler.getAwsProxyHandler(ServiceApplication.class);
} catch (ContainerInitializationException e) {
e.printStackTrace();
throw new RuntimeException("Could not initialize Spring Boot application", e);
}
}

@Override
public void handleRequest(InputStream inputStream, OutputStream outputStream, Context context)
throws IOException {
logger.info("Handling request"+inputStream.toString());
handler.proxyStream(inputStream, outputStream, context);
}
}
```
Rest Mapping
```
@PostMapping("/inference")
public ServiceResponse modelInference(@RequestBody ServiceRequest serviceRequest, @RequestHeader Map headers) {
......
```

## Full log output
*Paste the full log output from the Lambda function's CloudWatch logs*

Below is the stack trace
```
2024-04-20T09:41:05.847+05:30 at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.startRuntime(AWSLambda.java:197) ~[aws-lambda-java-runtime-interface-client-2.4.2-linux-x86_64.jar:2.4.2]
2024-04-20T09:41:05.847+05:30
at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.main(AWSLambda.java:187) ~[aws-lambda-java-runtime-interface-client-2.4.2-linux-x86_64.jar:2.4.2]

at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.main(AWSLambda.java:187) ~[aws-lambda-java-runtime-interface-client-2.4.2-linux-x86_64.jar:2.4.2]
2024-04-20T09:41:05.848+05:30
com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `java.lang.String` from Object value (token `JsonToken.START_OBJECT`)

com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize value of type `java.lang.String` from Object value (token `JsonToken.START_OBJECT`)
2024-04-20T09:41:05.848+05:30 at [Source: (ByteArrayInputStream); line: 1, column: 59] (through reference chain: com.amazonaws.serverless.proxy.model.AwsProxyRequest["body"])
2024-04-20T09:41:05.848+05:30
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)

at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1752)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1526)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken(DeserializationContext.java:1431)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.DeserializationContext.extractScalarFromObject(DeserializationContext.java:943)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.std.StdDeserializer._parseString(StdDeserializer.java:1424)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:48)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:11)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.module.afterburner.deser.SettableStringMethodProperty.deserializeAndSet(SettableStringMethodProperty.java:41)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:278)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.module.afterburner.deser.SuperSonicBeanDeserializer.deserialize(SuperSonicBeanDeserializer.java:155)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323)
2024-04-20T09:41:05.848+05:30 at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:2105)
2024-04-20T09:41:05.849+05:30 at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1481)
2024-04-20T09:41:05.849+05:30 at com.amazonaws.serverless.proxy.internal.LambdaContainerHandler.proxyStream(LambdaContainerHandler.java:257)
2024-04-20T09:41:05.849+05:30 at com..StreamLambdaHandler.handleRequest(StreamLambdaHandler.java:36)
```