chore(deps): update songmu/tagpr action to v1.15.0 (#286)

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

Author: renovate[bot]

.github/workflows/generate_release_tag.yaml

@@ -19,6 +19,6 @@ jobs:
       - uses: actions/checkout@v5
         with:
           token: ${{ steps.generate.outputs.token }}
-      - uses: Songmu/tagpr@v1.12.1
+      - uses: Songmu/tagpr@v1.15.0
         env:
           GITHUB_TOKEN: ${{ steps.generate.outputs.token }}