$40976 Fix validation for SageMaker App Image Config: API rejects valid UID/GID pairs defined in provider schema

[richardissailing]

Description of Changes

This PR fixes the validation for the aws_sagemaker_app_image_config resource's FileSystemConfig by updating the allowed values for default_uid and default_gid to match AWS API requirements. Currently, the provider schema allows values (0) that the AWS API rejects.

Fixes #40976

Output from Acceptance Testing

make testacc TESTS=TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystem  PKG=sagemaker
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.3 test ./internal/service/sagemaker/... -v -count 1 -parallel 20 -run='TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystem'  -timeout 360m -vet=off
2025/01/27 19:57:13 Initializing Terraform AWS Provider...
=== RUN   TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystemValidation
=== PAUSE TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystemValidation
=== CONT  TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystemValidation
--- PASS: TestAccSageMakerAppImageConfig_KernelGatewayImage_fileSystemValidation (90.94s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/sagemaker  91.119s

Additional Details

The AWS SageMaker API only supports specific values for FileSystemConfig:

• default_uid: 1000
• default_gid: 100

However, the current provider schema allows values (0) that the API rejects with:

Error: updating SageMaker App Image Config: operation error SageMaker: UpdateAppImageConfig, https response error StatusCode: 400, RequestID: ace80b14-653d-47c0-8225-01aa5cd43ad7, api error ValidationException: Unsupported FileSystemConfig parameters. Only supported values of DefaultUId and DefaultGID are 1000 and 100 respectively

This PR updates the schema validation to only allow the supported values, providing better user experience by failing fast during plan phase rather than during apply.

[github-actions]

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