Bump peter-evans/create-pull-request from 4 to 6 (#19)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 4 to 6.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v4...v6)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/1-prepare-release.yaml

@@ -29,7 +29,7 @@ jobs:
       - name: Update Changelog
         run: hatch run changelog:build --yes --version "$VERSION"
 
-      - uses: peter-evans/create-pull-request@v4
+      - uses: peter-evans/create-pull-request@v6
         name: Create Pull Request
         id: cpr
         with: