Renovate: actions/upload-artifact to 834a144 (#408)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[actions/upload-artifact](https://redirect.github.com/actions/upload-artifact)
| action | digest | `0b2256b` -> `834a144` |

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.github/workflows/paper.yaml

@@ -23,7 +23,7 @@ jobs:
 
       - name: Upload
         # yamllint disable-line rule:line-length
-        uses: actions/upload-artifact@0b2256b8c012f0828dc542b3febcab082c67f72b # v4
+        uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4
         with:
           name: paper
           path: paper/paper.pdf