Add changelog note for Go extraction reconciliation (#1286)

* Add changelog note for Go extraction reconciliation

* Update CHANGELOG.md

Co-authored-by: Henry Mercer <henrymercer@github.com>

* Update CHANGELOG.md

Co-authored-by: Andrew Eisenberg <aeisenberg@github.com>

* Tweaks from PR review

Co-authored-by: Henry Mercer <henrymercer@github.com>
Co-authored-by: Andrew Eisenberg <aeisenberg@github.com>

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## [UNRELEASED]
 
-No user facing changes.
+- We are rolling out a feature of the CodeQL Action in October 2022 that changes the way that Go code is analyzed to be more consistent with other compiled languages like C/C++, C#, and Java. You do not need to alter your code scanning workflows. If you encounter any problems, please [file an issue](https://github.com/github/codeql-action/issues) or open a private ticket with GitHub Support and request an escalation to engineering.
 
 ## 2.1.26 - 29 Sep 2022