chore(deps): update actions/setup-node action from v5.0.0 to v6 (.github/workflows/validate_docs_build.yml) (#13417)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -19,7 +19,7 @@ jobs:
           extended: true
 
       - name: Setup Node
-        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version: '22.20.0'
 

.github/workflows/validate_docs_build.yml

@@ -16,7 +16,7 @@ jobs:
           extended: true
 
       - name: Setup Node
-        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
         with:
           node-version: '22.20.0'