fix: support AWS::URLSuffix CFN pseudo-param in mock

[cjihrig]

Description of changes

This commit adds mock support for the CFN pseudo-parameter AWS::URLSuffix, which is used by the GraphQL transformer v2.

Issue #, if available

Description of how you validated changes

Manual and unit testing

Checklist

• PR description included
• yarn test passes
• Tests are changed or added

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

[codecov-commenter]

Codecov Report

Merging #7416 (c45b58f) into master (be441c9) will increase coverage by 0.00%.
The diff coverage is 64.28%.

@@           Coverage Diff           @@
##           master    #7416   +/-   ##
=======================================
  Coverage   52.74%   52.75%           
=======================================
  Files         514      514           
  Lines       25919    25916    -3     
  Branches     5059     5056    -3     
=======================================
  Hits        13672    13672           
+ Misses      11280    11277    -3     
  Partials      967      967           

Impacted Files	Coverage Δ
...l-mock/src/CFNParser/appsync-resource-processor.ts	0.00% <ø> (ø)
...ges/amplify-util-mock/src/CFNParser/stack/index.ts	0.00% <ø> (ø)
...-util-mock/src/utils/lambda/populate-cfn-params.ts	0.00% <ø> (ø)
...ider-awscloudformation/src/display-helpful-urls.js	16.90% <33.33%> (+0.35%)	⬆️
...wscloudformation/utils/auth-sms-workflow-helper.ts	45.45% <80.00%> (+21.64%)	⬆️
...r-utils/awscloudformation/utils/message-printer.ts	50.00% <100.00%> (-10.00%)	⬇️

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[sundersc]

LGTM

[github-actions]

👋 Hi, this pull request was referenced in the v5.0.2 release!

Check out the release notes here https://github.com/aws-amplify/amplify-cli/releases/tag/v5.0.2.