Bump tj-actions/github-changelog-generator from 1.19 to 1.20

Bumps [tj-actions/github-changelog-generator](https://github.com/tj-actions/github-changelog-generator) from 1.19 to 1.20.
- [Release notes](https://github.com/tj-actions/github-changelog-generator/releases)
- [Changelog](https://github.com/tj-actions/github-changelog-generator/blob/main/HISTORY.md)
- [Commits](tj-actions/github-changelog-generator@v1.19...v1.20)

---
updated-dependencies:
- dependency-name: tj-actions/github-changelog-generator
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -44,7 +44,7 @@ jobs:
           TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
 
       - name: Generate CHANGELOG
-        uses: tj-actions/github-changelog-generator@v1.19
+        uses: tj-actions/github-changelog-generator@v1.20
 
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v5