Mark 4.0.16 as released (#25510)

Update changelog and emscripten-version.txt

Author: emscripten-bot

ChangeLog.md

@@ -18,8 +18,11 @@ to browse the changes between the tags.
 
 See docs/process.md for more on how version tagging works.
 
-4.0.16 (in development)
+4.0.17 (in development)
 -----------------------
+
+4.0.16 - 10/07/25
+-----------------
 - For windows users, colored console output for error messages and logging now
   requires Windows 10 or above. (#25502)
 - A warning was added about usage of embind without C++17 or above. (#25424)

emscripten-version.txt

@@ -1 +1 @@
-4.0.16-git
+4.0.17-git