docs(CHANGELOG): add Unreleased section

ErichDonGubler · ErichDonGubler · commit e883fa7b8b7b · 2024-07-18T11:55:08.000-04:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -37,6 +37,8 @@ Bottom level categories:
 - Hal
 -->
 
+## Unreleased
+
 ## 22.0.0 (2024-07-17)
 
 ### Overview
