Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/maven-swag-build.yml

@@ -33,7 +33,7 @@ jobs:
           distribution: ${{ inputs.java-distribution }}
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
           cache: npm

.github/workflows/maven-swag-deploy.yml

@@ -47,7 +47,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ inputs.node-version }}
           cache: npm