feat: github-action + github-tags datasource + overhaul cicd

[kvanzuijlen]

Summary

This PR introduces a native GitHub Action for version, adds a new github-tags datasource, and significantly overhauls the CI/CD pipeline and Docker build process. It also includes various fixes for SemVer handling and updates dependencies.

Changes

🚀 Features

• GitHub Action: Added a composite action.yml to allow using version directly in GitHub Actions workflows for bumping versions or retrieving the latest dependencies.
• New Datasource: Added github-tags datasource to retrieve tags directly from GitHub repositories using the GraphQL API.

🐛 Fixes

• SemVer Handling: Improved semver package to correctly handle and preserve v prefixes when bumping or selecting versions.
• Docker Logging: Added better error logging to the Docker datasource.

👷 CI/CD & Infrastructure

• Docker Build: Completely overhauled Dockerfile and build workflows (build.yaml, ci.yaml) to use docker/build-push-action, support multi-arch builds (amd64, arm64, etc.), and improve caching.
• GoReleaser: Updated .goreleaser.yaml configuration to latest version and added Homebrew cask.
• Runners: Upgraded GitHub Actions runners to ubuntu-24.04.

📚 Documentation

• New Guides: Added documentation for the new GitHub Action (docs/getting-started/github_action.md).
• Updates: Refreshed installation and usage guides for bump and latest commands.

🔧 Chore

• Dependencies: Updated Go (go.mod) and Python (pyproject.toml) dependencies.
• Linters: Updated .golangci.yaml and fixed linting issues in cmd/.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
2 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud