Bump peter-evans/create-pull-request from 6 to 8

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 6 to 8.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v6...v8)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/weekly_pull_requests.yaml

@@ -51,7 +51,7 @@ jobs:
             # see https://github.com/peter-evans/create-pull-request
             -
                 name: Create pull-request
-                uses: peter-evans/create-pull-request@v6
+                uses: peter-evans/create-pull-request@v8
                 id: cpr
                 with:
                     token: ${{ secrets.ACCESS_TOKEN }}