chore: add OpenSSF Best Practices badge (#1523)

* chore: add OpenSSF Best Practices badge
--------
Signed-off-by: Christopher Phillips <christopher.phillips@anchore.com>

README.md

@@ -3,13 +3,14 @@
 </p>
 
 [![Static Analysis + Unit + Integration](https://github.com/anchore/grype/workflows/Static%20Analysis%20+%20Unit%20+%20Integration/badge.svg)](https://github.com/anchore/grype/actions?query=workflow%3A%22Static+Analysis+%2B+Unit+%2B+Integration%22)
-[![Acceptance](https://github.com/anchore/grype/workflows/Acceptance/badge.svg)](https://github.com/anchore/grype/actions?query=workflow%3AAcceptance)
+![Validations](https://github.com/anchore/grype/workflows/Validations/badge.svg)
 [![Go Report Card](https://goreportcard.com/badge/github.com/anchore/grype)](https://goreportcard.com/report/github.com/anchore/grype)
 [![GitHub release](https://img.shields.io/github/release/anchore/grype.svg)](https://github.com/anchore/grype/releases/latest)
 [![GitHub go.mod Go version](https://img.shields.io/github/go-mod/go-version/anchore/grype.svg)](https://github.com/anchore/grype)
 [![License: Apache-2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/anchore/grype/blob/main/LICENSE)
 [![Slack Invite](https://img.shields.io/badge/Slack-Join-blue?logo=slack)](https://anchore.com/slack)
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/anchore/grype/badge)](https://api.securityscorecards.dev/projects/github.com/anchore/grype)
+[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/6708/badge)](https://www.bestpractices.dev/projects/6708)
 
 A vulnerability scanner for container images and filesystems. Easily [install the binary](#installation) to try it out. Works with [Syft](https://github.com/anchore/syft), the powerful SBOM (software bill of materials) tool for container images and filesystems.