chore(deps): update docker/login-action digest to 7840e6d (#1246)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| docker/login-action | action | digest | `5f4866a` -> `7840e6d` |

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.github/workflows/test-build-publish.yaml

@@ -156,7 +156,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to the GitHub Container registry
-        uses: docker/login-action@5f4866a30a54f16a52d2ecb4a3898e9e424939cf
+        uses: docker/login-action@7840e6ddd4a9223910798f6a315544257fccd96e
         with:
           registry: ${{ env.GITHUB_CR }}
           username: ${{ github.actor }}