ci: remove node.js installation step

https://github.com/oven-sh/setup-bun/issues/46

.github/workflows/ci.yml

@@ -29,11 +29,6 @@ jobs:
       - name: "Check out the repo"
         uses: "actions/checkout@v3"
 
-      - name: "Install Node.js"
-        uses: "actions/setup-node@v3"
-        with:
-          node-version: "lts/*"
-
       - name: "Install Bun"
         uses: "oven-sh/setup-bun@v1"