⬆️ Updates kentaro-m/auto-assign-action action to v1.2.6

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/pull_request.yml

@@ -6,6 +6,6 @@ jobs:
   add-reviews:
     runs-on: ubuntu-latest
     steps:
-      - uses: kentaro-m/auto-assign-action@v1.1.2
+      - uses: kentaro-m/auto-assign-action@v1.2.6
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}