ci: set builder

Signed-off-by: Shinnosuke Sawada-Dazai <shin@warashi.dev>

Author: Warashi

.github/workflows/actions-test.yml

@@ -10,6 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: docker/setup-buildx-action@v3
+        id: setup-buildx
       - uses: docker/metadata-action@v5
         id: meta
         with:
@@ -27,6 +28,7 @@ jobs:
       - name: inject cache into docker
         uses: ./
         with:
+          builder: ${{ steps.setup-buildx.outputs.name }}
           skip-extraction: false
           cache-map: |
             {