Update badges on README

Author: marc0der

README.md

@@ -1,7 +1,7 @@
 # SDKMAN Database Migrations
 
-[![Build Status](https://travis-ci.org/sdkman/sdkman-db-migrations.svg?branch=master)](https://travis-ci.org/sdkman/sdkman-db-migrations)
-[![Slack](https://slack.sdkman.io/badge.svg)](https://slack.sdkman.io)
+[![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/sdkman/sdkman-db-migrations/migrate.yml)](https://github.com/sdkman/sdkman-db-migrations/actions/workflows/migrate.yml)
+[![Discord](https://img.shields.io/discord/1245471991117512754)](https://discord.gg/y9mVJYVyu4)
 
 This enables the users of SDKMAN to contribute new Installation Candidates and related Versions to be served by the API.