chore(deps): update docker/metadata-action digest to 2a4836a (#1031)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| docker/metadata-action | action | digest | `f3c3cad` -> `2a4836a` |

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.github/workflows/release-please.yaml

@@ -88,7 +88,7 @@ jobs:
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@f3c3cad8ad5e1076ffba2449385b1547f1e3c566
+        uses: docker/metadata-action@2a4836ac76fe8f5d0ee3a0d89aa12a80cc552ad3
         with:
           images: ${{ env.REGISTRY }}/${{ matrix.path }}