Bump peter-evans/create-pull-request from 4 to 6

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]>

.github/workflows/update.yml

@@ -59,7 +59,7 @@ jobs:
       - name: Create Pull Request if not exist
         if: ${{ steps.checkout-pr.outputs.switched == 'false' }}
         id: cpr
-        uses: peter-evans/create-pull-request@v4
+        uses: peter-evans/create-pull-request@v6
         with:
           commit-message: add unsigned QR codes
           branch: ${{ steps.new-branch.outputs.name }}