Bump peter-evans/create-pull-request from 5 to 6 (#2918)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 5 to 6.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v5...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>

Author: dependabot[bot]

.github/workflows/vendor.yml

@@ -51,7 +51,7 @@ jobs:
           Set-GHVariable -Name LIST_UPDATED -Value $listUpdated.Trim(', ')
           echo "UPDATE_MESSAGE<<<EOF`n$updateMessage`n<EOF" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
 
-    - uses: peter-evans/create-pull-request@v5
+    - uses: peter-evans/create-pull-request@v6
       if: env.COUNT_UPDATED > 0
       with:
         title: 'Updates to `${{ env.COUNT_UPDATED }}` vendored dependencies'