Restricts the protobuf version to <5.0.0 in setup.py (#413)

# Description

Restricts the protobuf version to <5.0.0 in setup.py and closes
https://github.com/NVIDIA-Omniverse/orbit/issues/412

## Type of change

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

## Screenshots

| Before | After |
| ------ | ----- |
|
![image](https://github.com/NVIDIA-Omniverse/orbit/assets/17403324/cc41ae19-a22c-472b-8ab8-aa21d2b0b55d)
|
![image](https://github.com/NVIDIA-Omniverse/orbit/assets/17403324/eabf360b-5205-4eb6-a6ca-9403a94ad6d5)
|


## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./orbit.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] I have run all the tests with `./orbit.sh --test` and they pass
- [ ] 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

CONTRIBUTORS.md

@@ -39,9 +39,9 @@ Guidelines for modifications:
 * Chenyu Yang
 * Jia Lin Yuan
 * Jingzhou Liu
+* Kourosh Darvish
 * Lorenz Wellhausen
 * Muhong Guo
-* Kourosh Darvish
 * Özhan Özen
 * Qinxi Yu
 * René Zurbrügg

source/extensions/omni.isaac.orbit_tasks/setup.py

@@ -22,7 +22,9 @@ INSTALL_REQUIRES = [
     "numpy",
     "torch==2.0.1",
     "torchvision>=0.14.1",  # ensure compatibility with torch 1.13.1
-    "protobuf>=3.20.2",
+    # 5.26.0 introduced a breaking change, so we restricted it for now.
+    # See issue https://github.com/tensorflow/tensorboard/issues/6808 for details.
+    "protobuf >= 3.19.6, < 5.0.0",
     # data collection
     "h5py",
     # basic logger