fix: limit SAR application test to regions that have SAR enabled, plus simplification for docker asset test (#2096)

Fixes test runs that try to deploy a SAR resource to regions that don’t support them. Supported regions are documented here: https://docs.aws.amazon.com/general/latest/gr/serverlessrepo.html.

It also removes logic from packages/@aws-cdk-testing/cli-integ/tests/cli-integ-tests/deploy/cdk-deploy-docker-asset-multi-region.integtest.ts that depends on process.env.AWS_REGIONS, which isn’t set in Atmosphere-enabled runs.

This precedes an API change in an internal repo.

Checklist

This change contains a major version upgrade for a dependency and I confirm all breaking changes are addressed
- Release notes for the new version:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

AWS Cloud Development Kit (AWS CDK) Toolkit

The AWS Cloud Development Kit (AWS CDK) is an open-source software development framework to define cloud infrastructure in code and provision it through AWS CloudFormation.

The AWS CDK consists of two main components:

a class library, that you use to to model your infrastructure in code; and
a toolkit, consisting of a CLI or a programmatic library, to act on those models.

This repository contains the code for the toolkit components. The class library repository is the main repository for the CDK project.

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You may also find help on these community resources:

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Contributing

We welcome community contributions and pull requests. See CONTRIBUTING.md for information on how to set up a development environment and submit code.

Structure of this repository

Here are the packages in this repository. See the README of each package for more information about it:

Package	Description	Published?	Maintained?
aws-cdk	The CDK Toolkit CLI, main CLI interface to CDK projects.	Yes	Yes
@aws-cdk/toolkit-lib	A programmatic interface for the CDK Toolkit.	Yes	Yes
cdk	An alias for `aws-cdk` so you can run `npx cdk` even if it’s not installed.	Yes	Yes
cdk-assets v3	CLI component handling asset uploads, also used as a CLI in CDK Pipelines	Yes	Yes
@aws-cdk/cloud-assembly-schema	The contract between the CDK construct library and the CDK toolkit	Yes	Yes
@aws-cdk/cloudformation-diff	CLI component for diffing CloudFormation templates	Yes	Yes
@aws-cdk/cli-plugin-contract	TypeScript types for CLI plugins.	Yes	Yes
@aws-cdk/cdk-cli-wrapper	A deprecated attempt at building a programmatic interface for the CLI	No	No
@aws-cdk/node-bundle	A tool to build CLI bundles that include license attributions.	No	Yes
@aws-cdk/user-input-gen	A build tool for the CLI and toolkit-lib.	No	Yes
@aws-cdk/yarn-cling	A deprecated build tool for the CLI.	No	No

Every package comes with its own unit tests. There is a companion repository to this one containing the integration tests. You can find it here: https://github.com/aws/aws-cdk-cli-testing

See the contributing guide for more information on this repository.

Compatibility

The CLI is always able to process CDK apps using a version of the Construct Library released before it. We recommend you always keep the CLI version up-to-date to get the latest features.

For more details on the compatibility model and specific versions that work together, see COMPATIBILITY.md.