AWS SDK request id is using `aws.requestId` instead of `aws.request_id` defined by semantic conventions

This should be issue in upstream https://github.com/open-telemetry/opentelemetry-java-instrumentation but there are too many issues in upstream so creating one here first so people are aware of it.

In semantic convention registry, the attribute name for request id is aws.request_id schema, while the SDK generated spans are using aws.requestId from Application Signals Sample App

{
        "aws.local.service": "vets-service-java",
        "EC2.AutoScalingGroup": "eks-ng-171f7929-8cc8d89a-078d-578b-2510-f05a45ce860e",
        "net.peer.port": 443,
        "rpc.service": "S3",
        "http.url": "https://s3.amazonaws.com/",
        "Host": "ip-192-168-13-119.ec2.internal",
        "rpc.system": "aws-api",
        "thread.name": "http-nio-8083-exec-6",
        "aws.remote.service": "AWS::S3",
        "aws.remote.operation": "ListBuckets",
        "aws.local.environment": "eks:midlina-otel/default",
        "K8s.Namespace": "default",
        "aws.local.operation": "GET /vets",
        "http.status_code": 200,
        "net.peer.name": "s3.amazonaws.com",
        "aws.span.kind": "CLIENT",
        "rpc.method": "ListBuckets",
        "aws.agent": "java-aws-sdk",
        "EC2.InstanceId": "i-0c649a0824e24ede9",
        "EKS.Cluster": "midlina-otel",
        "PlatformType": "AWS::EKS",
        "aws.requestId": "Z4GPNP2V7J4VSQXP", // requestId
        "http.method": "GET",
        "thread.id": 48
 }

Both v1 and v2 SDK in upstream repo are using aws.requestId

V1 defined the attribute name in AwsExperimentalAttributes and used in AwsSdlExperimentalAtributesExtractor
V2 hard code the attribute name and used in TracingExecutionInterceptor

aws-observability / aws-otel-java-instrumentation

AWS SDK request id is using `aws.requestId` instead of `aws.request_id` defined by semantic conventions #894