Update release date for v1.9.1 (#416)

SlavaNordic · web-flow · commit 3e10225a38d2 · 2026-05-18T18:33:06.000+02:00
diff --git a/Changelog.md b/Changelog.md
@@ -1,4 +1,4 @@
-## 1.9.1 - Unreleased
+## 1.9.1 - 2026-05-18
 
 ### Changed
 
