fix(ci): use the Node pin for Windows runtime refresh

.github/workflows/refresh-windows-embedded-mpv-runtime.yaml

@@ -35,7 +35,7 @@ jobs:
             - name: Setup Node.js
               uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020
               with:
-                  node-version: '22'
+                  node-version-file: '.nvmrc'
 
             - name: Refresh pin when it approaches upstream retention
               id: refresh