Enhance build security and reach SLSA Level 3 with GitHub Artifact Attestations

Software build security is increasingly important due to high-profile supply chain attacks such as SolarWinds and MOVEit, which expose vulnerabilities in the build process. Traditional security measures are insufficient, prompting the need for a comprehensive framework like the Supply-chain Levels for Software Artifacts (SLSA) to ensure integrity and provenance in software supply chains. SLSA, governed by the Open Source Security Foundation, categorizes security maturity into four levels, with Level 3 emphasizing rigorous standards for provenance and isolation to mitigate common attack vectors. GitHub Artifact Attestations facilitate the journey to SLSA Level 3 by enabling secure, automated build verification within GitHub Actions workflows, simplifying the process of establishing provenance and verifying signatures. This framework ensures that artifacts are produced and authenticated in controlled, tamper-resistant environments, reducing the risk of unauthorized access and ensuring that the software delivered to end-users is unaltered.