fix: correctly install mesa-gl for arm (#3647)
### Summary
Fixes the `arm64` image builds, which will be available again starting
in version `0.15.13`. A fix was implemented upstream in
https://github.com/Unstructured-IO/base-images/pull/47 and a workaround
that installed `x86` packages in the `unstructured` repo was removed.
### Testing
See [this
job](https://github.com/Unstructured-IO/unstructured/actions/runs/10948943594/job/30401108059?pr=3647)
for a successful `arm64` build on the feature branch.
