Update docker/build-push-action digest to 48aba3b (#283)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[docker/build-push-action](https://redirect.github.com/docker/build-push-action)
| action | digest | `4f58ea7` -> `48aba3b` |

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Author: lettuce-bot[bot]

.github/workflows/pull-request.yaml

@@ -15,7 +15,7 @@ jobs:
         uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3
 
       - name: Build container image
-        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6
+        uses: docker/build-push-action@48aba3b46d1b1fec4febb7c5d0c644b249a11355 # v6
         with:
           context: .
           file: Dockerfile