ci: use shared apify/workflows/pnpm-install in version_docs

Move working-directory to job-level defaults so the composite
action's 'pnpm install' runs in website/. Override explicitly for
the Python uv step.

Author: B4nan

.github/workflows/manual_release_stable.yaml

@@ -116,6 +116,10 @@ jobs:
       NODE_VERSION: 22
       PYTHON_VERSION: 3.14
 
+    defaults:
+      run:
+        working-directory: website
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
@@ -140,19 +144,13 @@ jobs:
 
       - name: Install Python dependencies
         run: uv run poe install-dev
+        working-directory: .
 
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4.1.0
-        with:
-          run_install: false
-
-      - name: Install website dependencies
-        run: pnpm install --frozen-lockfile
-        working-directory: website
+      - name: Install pnpm and website dependencies
+        uses: apify/workflows/pnpm-install@main
 
       - name: Snapshot the current version
         run: |
-          cd website
           VERSION="$(python -c "import tomllib, pathlib; print(tomllib.loads(pathlib.Path('../pyproject.toml').read_text())['project']['version'])")"
           MAJOR_MINOR="$(echo "$VERSION" | cut -d. -f1-2)"
           export MAJOR_MINOR