Update python Docker tag to v3.13

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
python	container	minor	3.12-alpine -> 3.13-alpine

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[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request updates the Python Docker image used in the GitHub Actions workflow from version 3.12-alpine to 3.13-alpine. It's a minor version update that affects the container environment for the workflow.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Update Python Docker image version in GitHub Actions workflow	Changed Python image tag from 3.12-alpine to 3.13-alpine This update affects the container used for running the workflow	.github/workflows/cron.yml

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[sourcery-ai]

We have skipped reviewing this pull request. It seems to have been created by a bot (hey, renovate-bot!). We assume it knows what it's doing!