docs(CHANGELOG.md): add dependency bump from dependabot

dependabot[bot] · github-actions[bot] · commit ffe022a9e5df · 2025-04-08T00:27:56.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -11,6 +11,7 @@
 ### Bug fixes:
 
 ### Dependencies:
+- build(deps): `golang.org/x/sync` from 0.12.0 to 0.13.0 ([#653](https://github.com/fastly/go-fastly/pull/653))
 
 ## [v10.0.0](https://github.com/fastly/go-fastly/releases/tag/v10.0.0) (2025-04-02)
 
