Update CHANGELOG for v6.7.5 (#4837)

Signed-off-by: James Phillips <[email protected]>

Author: jamesdphillips

CHANGELOG-6.md

@@ -5,7 +5,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic
 Versioning](http://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## [6.7.5] - 2022-08-10
+
+### Security
+- Updated the package graphql-go/graphql to address [CVE-2022-37315](https://nvd.nist.gov/vuln/detail/CVE-2022-37315)
 
 ## [6.7.4] - 2022-07-12