chore: Add Python zip archive that is agnostic of a specific Python runtime version

[bryantbiggs]

Description

• Add Python zip archive that is agnostic of a specific Python runtime version

Motivation and Context

• The zip contents of https://github.com/terraform-aws-modules/terraform-aws-lambda/tree/master/examples/fixtures/python3.8-zip are not specific to any Python runtime version, but the file path alludes to a runtime version dependency. Since this fixture may be in used across various other locations, this PR just adds a copy of the zip archive but without any runtime specific identifier, avoiding any ties to a runtime that will inevitably reach an end of life

Breaking Changes

• No

How Has This Been Tested?

• [ ] I have updated at least one of the examples/* to demonstrate and validate my change(s)
• [ ] I have tested and validated these changes using one or more of the provided examples/* projects
• [ ] I have executed pre-commit run -a on my pull request

[bryantbiggs]

xref https://github.com/terraform-aws-modules/terraform-aws-apigateway-v2/pull/54#discussion_r1605317719

[antonbabenko]

This PR is included in version 7.5.0 :tada: