chore: fix versions for tests (a bit more)

Author: JoshuaKGoldberg

src/steps/writing/creation/dotGitHub/actions.test.ts

@@ -15,7 +15,7 @@ name: Prepare
 runs:
   steps:
     - uses: pnpm/action-setup@v2
-    - uses: actions/setup-node@v3
+    - uses: actions/setup-node@v4
       with:
         cache: pnpm
         node-version: '18'