update emsdk

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

.github/actions/get-emsdk/action.yml

@@ -3,7 +3,7 @@ inputs:
   version:
     description: ""
     required: false
-    default: "3.1.64"
+    default: "4.0.9"
 
 
 runs:

CHANGELOG.md

@@ -19,6 +19,7 @@ Supported `polkadot-sdk` rev: `2503.0.1`
 ### Changed
 
 - Supported `polkadot-sdk` version is now `2503.0.1`
+- The `emsdk` version is now `4.0.9`
 
 ### Fixed
 

crates/llvm-builder/src/utils.rs

@@ -38,7 +38,7 @@ pub const MUSL_SNAPSHOTS_URL: &str = "https://git.musl-libc.org/cgit/musl/snapsh
 pub const EMSDK_SOURCE_URL: &str = "https://github.com/emscripten-core/emsdk.git";
 
 /// The emscripten SDK version.
-pub const EMSDK_VERSION: &str = "3.1.64";
+pub const EMSDK_VERSION: &str = "4.0.9";
 
 /// The subprocess runner.
 ///