# Description

This PR relaxes the upper range of allowed protobuf versions so that
IsaacLab can be installed in a modern python environment without
downgrading or conflicting with modern protobuf versions.

The original reason for pinning this to <5 was apparently due to
transitive breakage in tensorboard, which also had this pinned to <5 -
so pinning this in IsaacLab itself would not be necessary if both deps
were composed together. Tensorboard has since (in Aug 2024) unpinned
this here: https://github.com/tensorflow/tensorboard/pull/6888

So, the original concern should, afaict, be obviated now.

# Fixes

This should repair any case where someone wants to install IsaacLab into
a modern python environment that uses any of the Google ecosystem
(gRPC/protobuf et al) without conflict or forced down-rev'ing to older
versions (current version of protobuf is 6.31.1).

## Type of change

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [x] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there