Add OSSF scorecard badge

Author: trask

README.md

@@ -1,5 +1,8 @@
+[![Release](https://img.shields.io/github/v/release/open-telemetry/opentelemetry-java-contrib?include_prereleases&style=)](https://github.com/open-telemetry/opentelemetry-java-contrib/releases/)
+[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/open-telemetry/opentelemetry-java-contrib/badge)](https://scorecard.dev/viewer/?uri=github.com/open-telemetry/opentelemetry-java-contrib)
+[![Slack](https://img.shields.io/badge/slack-@cncf/otel--java-blue.svg?logo=slack)](https://cloud-native.slack.com/archives/C014L2KCTE3)
+
 # OpenTelemetry Java Contrib
-[![Build](https://github.com/open-telemetry/opentelemetry-java-contrib/actions/workflows/build.yml/badge.svg)](https://github.com/open-telemetry/opentelemetry-java-contrib/actions/workflows/build.yml)
 
 This project is intended to provide helpful libraries and standalone OpenTelemetry-based utilities that don't fit
 the express scope of the [OpenTelemetry Java](https://github.com/open-telemetry/opentelemetry-java) or