ci: refactor (#1158)

* ci: refactor

use debian bookworm
use updated wkhtmltopdf
override python and nodejs versions

* ci: fix bench and test

* ci: remove comments from example.env

* docs: add maintenance section

.github/workflows/build_bench.yml

@@ -31,6 +31,9 @@ jobs:
       - name: Setup Buildx
         uses: docker/setup-buildx-action@v2
 
+      - name: Set Environment Variables
+        run: cat example.env | grep -o '^[^#]*' >> "$GITHUB_ENV"
+
       - name: Build and test
         uses: docker/bake-action@v3.1.0
         with: