feat(events-target): SNSTopic support role

[phuhung273]

Issue # (if applicable)

Closes #33827

Description of changes

• SNSTopic support specifying IAM role

Describe any new or updated permissions being added

Specified IAM Role will automatically be granted sns:Publish on the topic

Description of how you validated changes

Unit + Integ

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.39%. Comparing base (a67c3f5) to head (3476ba7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33976   +/-   ##
=======================================
  Coverage   82.39%   82.39%           
=======================================
  Files         120      120           
  Lines        6960     6960           
  Branches     1175     1175           
=======================================
  Hits         5735     5735           
  Misses       1120     1120           
  Partials      105      105           

Flag	Coverage Δ
suite.unit	82.39% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	∅ <ø> (∅)
packages/aws-cdk-lib/core	82.39% <ø> (ø)

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[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 4314aec
• Result: SUCCEEDED
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