Apply suggestions from code review

Simplify the way the release body is defined.

Co-authored-by: Piotr Spieker <orzechow@posteo.de>

.github/workflows/bump-version-and-create-release.yaml

@@ -62,10 +62,6 @@ jobs:
         with:
           ref: ${{ needs.bump-version.outputs.new_tag }}
 
-      - name: Save Pull Request Description to File
-        run: |
-          echo "${{ github.event.pull_request.body }}" > /tmp/pull_request_description.md
-
       - name: Build release packages
         uses: docker/build-push-action@v6
         with:
@@ -85,5 +81,5 @@ jobs:
         with:
           artifacts: "/tmp/artifacts/release/*"
           tag: ${{ needs.bump-version.outputs.new_tag }}
-          bodyFile: /tmp/pull_request_description.md
+          body: ${{ github.event.pull_request.body }}