chore: prep v3.9.0

jkowalleck · jkowalleck · commit 542ff80b6b12 · 2023-12-10T12:50:09.000+01:00
Signed-off-by: Jan Kowalleck &lt;jan.kowalleck@gmail.com&gt;
diff --git a/HISTORY.md b/HISTORY.md
@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 
 ## unreleased
 
+## 3.9.0 - 2023-12-10
+
 * Changed
   * Hardened JSON imports (via [#1242], [#1245])
 * Build
