Updates for a number of sample hooks in Python.

[mrinaudo-aws]

Issue #, if available:

Description of changes: Updates for a number of sample hooks in Python, that include:

• updated generated files
• logic update for the sample hooks in the eks-cluster-public-api and s3-block-public-access directories
• updated Python version in the s3-bucket-encryption/template.yml file
• removed 2 .DS_Store files

Contract tests excerpts

cfn-hook-iam-policy-mfa-required

5 passed, 2 skipped, 17 deselected in 24.57s

ec2-imageid-check-ssm

3 passed, 1 skipped, 20 deselected in 10.44s

eks-cluster-logging

5 passed, 2 skipped, 17 deselected in 31.29s

eks-cluster-public-api

5 passed, 2 skipped, 17 deselected in 12.13s

iam-principal-boundary

5 passed, 2 skipped, 17 deselected in 22.04s

iam-users-have-policy

5 passed, 2 skipped, 17 deselected in 19.21s

no-admin-statements

5 passed, 2 skipped, 17 deselected in 52.92s

rds-encryption-verify

7 passed, 3 skipped, 14 deselected in 12.49s

s3-block-public-access

5 passed, 2 skipped, 17 deselected in 12.79s

s3-bucket-encryption

5 passed, 2 skipped, 17 deselected in 19.63s

s3-bucket-logging-enabled

5 passed, 2 skipped, 17 deselected in 18.42s

security-group-open-ingress

5 passed, 2 skipped, 17 deselected in 28.46s

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