feat(cli): upgrade aws-sdk to sdkv3

[TheRealAmazonKendra]

This PR updates the CDK CLI to use the AWS SDK V3 instead of V2.

Manual Test Cases for Authorization

All tests were run verbosely so that I could manually check the credentials being used from the CLI output.

• No credentials setup and no default profile fails as expected (established to ensure nothing was unintentionally setup)
• Explicitly provided profile sourced from config file, tested with both --profile and AWS_PROFILE
  • aws_access_key_id and aws_secret_access_key
  • aws_access_key_id and aws_secret_access_key and region
  • source_profile and role_arn that points to another profile with aws_access_key_id and aws_secret_access_key in both config and credentials
  • source_profile and role_arn that points to Environment
  • source_profile that and role_arn that points to SSO profile in both config and credentials
  • SSO both using all fields in [profile] and split between [sso-session] and [profile]
  • credential_source is Environment
  • credential_process
• Explicitly provided profile sourced from credentials file
  • aws_access_key_id and aws_secret_access_key
  • aws_access_key_id and aws_secret_access_key and region
  • source_profile and role_arn that points to another profile with aws_access_key_id and aws_secret_access_key in both config and credentials
  • source_profile and role_arn that points to Environment
  • source_profile that and role_arn that points to SSO profile in both config and credentials
  • credential_source is Environment
  • credential_source is EcsContainer (integ tests in CodeBuild)
  • credential_process
• Default profile (in both config file and credentials file)
  • AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables set (cleared after test)
  • AMAZON_ACCESS_KEY_ID and AMAZON_SECRET_ACCESS_KEY environment variables set (cleared after test)
  • aws_access_key_id and aws_secret_access_key
  • aws_access_key_id and aws_secret_access_key and region
  • source_profile and role_arn that points to a profile with aws_access_key_id and aws_secret_access_key
  • source_profile and role_arn that points to Environment (this will use fromEnv prior to getting to looking for source_profile in the Ini file)
  • SSO profile is setup as default
  • credential_process

Missing cases:

• Web Identity Token
• Ec2Instance as credential_source
• Metadata Service
• MFA

Closes #25870, #26292, #20956, #24744, #27265, 20896.

Reason for this change

The AWS SDK V2 is now in maintenance mode.

***Note: This is now blocked by #31623 because the underlying changes to cdk-assets were not merged to the v3 branch so that will need to be done before this can be rebased and merged.

Additionally, the version will need to be updated for skipping regression tests when this PR is ready to be merged.

---

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

[aws-cdk-automation]

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[rix0rrr]

☹️ on all these formatting changes

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[rix0rrr]

I trust the construction of this nuclear power plant.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.28%. Comparing base (6303b72) to head (275e6b4).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #31702      +/-   ##
==========================================
- Coverage   77.44%   77.28%   -0.17%     
==========================================
  Files         106      114       +8     
  Lines        7200     7628     +428     
  Branches     1345     1360      +15     
==========================================
+ Hits         5576     5895     +319     
- Misses       1428     1551     +123     
+ Partials      196      182      -14     

Flag	Coverage Δ
suite.unit	77.28% <ø> (-0.17%)	⬇️

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Components	Coverage Δ
packages/aws-cdk	77.28% <ø> (-0.17%)	⬇️

[aws-cdk-automation]

➡️ PR build request submitted to test-main-pipeline ⬅️

A maintainer must now check the pipeline and add the pr-linter/cli-integ-tested label once the pipeline succeeds.

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 275e6b4
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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