Apply suggestion from @Copilot

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: glharper

.github/workflows/typespec-sync.yml

@@ -53,7 +53,7 @@ jobs:
           fetch-depth: 0
           persist-credentials: true
 
-      - name: Setup Node.js
+          node-version: "20.x"
         uses: actions/setup-node@v4
         with:
           node-version: "24.x"