Add missing Scala 3.3.7 downloads entry

Author: WojciechMazur

_downloads/2025-10-13-3.3.7.md

@@ -0,0 +1,10 @@
+---
+title: Scala 3.3.7 LTS
+start: 13 October 2025
+layout: downloadpage
+release_version: 3.3.7
+release_date: "October 13, 2025"
+permalink: /download/3.3.7.html
+license: <a href="https://www.scala-lang.org/license/">Apache License, Version 2.0</a>
+api_docs: https://www.scala-lang.org/api/3.3.7/
+---