chore(deps): update registry.gitlab.developers.cam.ac.uk/uis/devops/infra/dockerimages/python docker tag to v3.13

This MR contains the following updates:

Package	Type	Update	Change
registry.gitlab.developers.cam.ac.uk/uis/devops/infra/dockerimages/python	final	minor	3.11-alpine -> 3.13-alpine

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