Add LLVM version bump to ChangeLog. NFC

sbc100 · sbc100 · commit 8c788152f29f · 2024-01-24T12:12:12.000-08:00
diff --git a/ChangeLog.md b/ChangeLog.md
@@ -20,6 +20,7 @@ See docs/process.md for more on how version tagging works.
 
 3.1.53 (in development)
 -----------------------
+- The llvm version that emscripten uses was updated to 19.0.0 trunk. (#21165)
 
 3.1.52 - 01/19/24
 -----------------
