CI: Bump setup-emsdk version to @v10

Should hopefully solve intermittent cache restore issues.

.github/workflows/javascript_builds.yml

@@ -63,7 +63,7 @@ jobs:
           scons --version
 
       - name: Set up Emscripten latest
-        uses: mymindstorm/setup-emsdk@v7
+        uses: mymindstorm/setup-emsdk@v10
         with:
           version: ${{env.EM_VERSION}}
           actions-cache-folder: ${{env.EM_CACHE_FOLDER}}