Update actions/setup-node action from v6.3.0 to v6.4.0 (.github/workflows/validate_docs_build.yml)

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -22,7 +22,7 @@ jobs:
           extended: true
 
       - name: Setup Node
-        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: '24.14.1' # TODO: Renovate helper might not be needed here - needs to be fully tested
 

.github/workflows/validate_docs_build.yml

@@ -17,7 +17,7 @@ jobs:
           extended: true
 
       - name: Setup Node
-        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: '24.14.1' # TODO: Renovate helper might not be needed here - needs to be fully tested