The new GitHub Actions workflow automates the process of suggesting related issues to maintainers in a repository. It uses Algolia, a search engine for large amounts of data, to index and provide recommendations on related issues. The workflow consists of three main steps: searching for related issues, creating a comment with the suggested issues, and adding a record to an Algolia index for future searches. This automation aims to reduce the burden on maintainers by providing a list of similar issues, making it easier for them to find relevant content in static areas like GitHub Issues.