Mark 4.0.8 as released (#24230)

Update changelog and emscripten-version.txt [ci skip]

Author: emscripten-bot

ChangeLog.md

@@ -18,16 +18,19 @@ to browse the changes between the tags.
 
 See docs/process.md for more on how version tagging works.
 
-4.0.8 (in development)
+4.0.9 (in development)
 ----------------------
+- When using cmake the EMSCRIPTEN_FORCE_COMPILERS setting was reverted to
+  being on by default due to issues that were found with disabling it. (#24223)
+
+4.0.8 - 04/30/25
+----------------
 - Programs built with `-sWASM_WORKERS` and `-sAUDIO_WORKLET` no longer generate
   separate `.ww.js` and `.aw.js` files.  This is similar to the change that was
   already made for pthreads in #21701.  This saves on complexity, code size and
   network requests. (#24163, #24190)
 - Closure arguments can now be used from ports using `settings.CLOSURE_ARGS`
   (#24192)
-- When using cmake the EMSCRIPTEN_FORCE_COMPILERS setting was reverted to
-  being on by default due to issues that were found with disabling it. (#24223)
 
 4.0.7 - 04/15/25
 ----------------

emscripten-version.txt

@@ -1 +1 @@
-4.0.8-git
+4.0.9-git