Bump python from 3.15.0a2-slim to 3.15.0a3-slim#46

GitTimeraider merged 1 commit intodevelopGitTimeraider/GithubBackup-docker:developfrom

dependabot/docker/python-3.15.0a3-slimGitTimeraider/GithubBackup-docker:dependabot/docker/python-3.15.0a3-slimCopy head branch name to clipboard