[Snyk] Security upgrade protobuf from 3.15.1 to 6.33.5

[ashmuck]

Snyk has created this PR to fix 1 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• requirements.txt

⚠️ Warning

tensorboard 2.4.1 has requirement setuptools>=41.0.0, but you have setuptools 40.5.0.
scikit-learn 1.0.2 requires scipy, which is not installed.

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Note

Medium Risk
Dependency bump from protobuf 3.x to 6.x may introduce runtime/API incompatibilities for any code (or transitive deps) relying on older protobuf behaviors, despite being a small diff.

Overview
Upgrades the Python dependency protobuf in requirements.txt from 3.15.1 to 6.33.5 to address a reported security vulnerability.

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Protobuf upgrade breaks tensorboard compatibility

High Severity

Upgrading protobuf from 3.15.1 to 6.33.5 introduces a dependency incompatibility with tensorboard==2.4.1 (pinned on line 33). TensorBoard 2.4.1 requires protobuf 3.x and is known to be incompatible with protobuf 4.x and above due to breaking changes in the generated pb2.py file format. This major version jump will cause runtime failures when TensorBoard tries to load protobuf-based data structures.