chore: bump repo-sync/pull-request from 2.6.2 to 2.12.1 (#371)

Bumps [repo-sync/pull-request](https://github.com/repo-sync/pull-request) from 2.6.2 to 2.12.1.
- [Release notes](https://github.com/repo-sync/pull-request/releases)
- [Commits](repo-sync/pull-request@65785d9...7e79a9f)

---
updated-dependencies:
- dependency-name: repo-sync/pull-request
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Piotr Galar <piotr.galar@gmail.com>

.github/workflows/tx-pull.yml

@@ -66,7 +66,7 @@ jobs:
         # Optional. Create given branch name in local and remote repository.
         create_branch: true
     - name: pull-request
-      uses: repo-sync/pull-request@65785d95a5a466e46a9d0708933a3bd51bbf9dde
+      uses: repo-sync/pull-request@7e79a9f5dc3ad0ce53138f01df2fad14a04831c5
       with:
         source_branch: "i18n-sync"
         destination_branch: "master"