Resolves Python 3.13 compatibility issues for the EventBridge webhook lambda code #2843
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
Issue #, if available:
N/A
Description of changes:
The configuration for the eventbridge-webhooks/2-github was updated to use the python3.13 runtime environment, however, prior to python 3.13 the "cgi" library had been deprecated and is no longer a valid import. The code has been updated to remove the cgi library and parse the event input without it.
Additionally, the "aws-secretsmanager-caching" dependency has been added to the requirements.txt files. This had been missing and caused a runtime error.
I have validated that the GitHub lambda code works, but have not personally tried the Twillio or Stripe code.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.