chore: bump actions/download-artifact from 4.1.2 to 4.1.4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.2 to 4.1.4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@eaceaf8...c850b93)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/witness.yml

@@ -56,7 +56,7 @@ jobs:
               go-version: 1.21.x
 
           - if: ${{ inputs.artifact-download != '' }}
-            uses: actions/download-artifact@eaceaf801fd36c7dee90939fad912460b18a1ffe # v4.1.2
+            uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
             with:
               name: ${{ inputs.artifact-download }}
               path: /tmp