chore(build): retrieve go version from go.mod as single point of truth

.github/workflows/docs.yml

@@ -0,0 +1,68 @@
+name: documentation
+
+on:
+  pull_request:
+    branches: [master]
+    paths: ['docs/**']
+  push:
+    branches: [master]
+    paths: ['docs/**']
+  workflow_dispatch:
+
+jobs:
+  pull-request-check:
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v5
+      
+      - uses: actions/setup-node@v4
+        with:
+          # renovate: datasource=node-version depName=node
+          node-version: 22
+
+      - name: Test Build
+        working-directory: ./docs
+        run: |
+          npm install
+          npm run build
+
+  build-docs:
+    if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          # renovate: datasource=node-version depName=node
+          node-version: 22
+
+      - name: Build docusaurus
+        working-directory: ./docs
+        run: |
+          npm install
+          npm run build
+      
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./docs/build
+
+  deploy-docs:
+    needs: build-docs
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write      # to deploy to Pages
+      id-token: write   # to verify the deployment originates from an appropriate source
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4