v1.2.0-alpha

What's Changed

• Bump netmask and pac-resolver in /test/workflow by @dependabot[bot] in #17
• Migrate CI to GitHub Actions and upgrade to Go 1.26 with security fixes by @bermannoah in #24
• Update non-CDK JS dependencies and add CI TypeScript validation by @bermannoah in #26
• Add Jest and CDK unit tests with CI integration by @bermannoah in #30

Full Changelog: https://github.com/cookpad/deepalert/commits/v1.2.0-alpha