CI: update build.yml

Author: Valentin Schneider-Lunitz

.github/workflows/build.yml

@@ -7,17 +7,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2.5.1
+        uses: actions/setup-node@v4
         with:
           node-version: 14.x
           # Comes with npm 6. For newer Node, encountered: https://github.com/npm/cli/issues/3359
       - run: npm install -g @redocly/openapi-cli && npm install -g redoc-cli
       - run: npm install -g gh-openapi-docs
       - name: Check out repository code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - run: gh-openapi-docs
       - name: Deploy 🚀
-        uses: JamesIves/github-pages-deploy-action@v4.2.2
+        uses: JamesIves/github-pages-deploy-action@v4
         with:
           branch: gh-pages
+          clean: true  # Clean only if on the main branch
           folder: .