Update docker/login-action action to v4

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| grafana/tempo |  | digest | `512af54` -> `cfe9b6a` |
| [oven/bun](https://github.com/oven-sh/bun) | stage | patch | `1.3.3` -> `1.3.4` |
| [oven/bun](https://github.com/oven-sh/bun) |  | patch | `1.3.3` -> `1.3.4` |

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Reviewed-on: #74
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.gitea/workflows/build.yaml

@@ -18,7 +18,7 @@ jobs:
 
       - name: Login to Container Registry
         if: ${{ gitea.event_name != 'pull_request' }}
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: docker.valverde.cloud
           username: ${{ secrets.DOCKER_REGISTRY_USERNAME }}