Bump actions/setup-node from 6 to 7 (#17)

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Author: dependabot[bot]

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
 
-    - uses: actions/setup-node@v6
+    - uses: actions/setup-node@v7
       with:
         node-version: 20