ci: pass --no-incremental to release changelog dry-run

Complements the previous commit: now that the changelog command respects
an explicit --no-incremental override, update the release workflow's
one-off dry-run step to use it, fixing the actual pipeline failure.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: bearomorphism

.github/workflows/bumpversion.yml

@@ -58,7 +58,7 @@ jobs:
         env:
           NEW_VERSION: ${{ steps.bump-version.outputs.new_version }}
         run: |
-          cz changelog --dry-run "${NEW_VERSION}" > .changelog.md
+          cz changelog --no-incremental --dry-run "${NEW_VERSION}" > .changelog.md
       - name: Release
         if: steps.bump-version.outputs.bumped == 'true'
         env: