cloud-sdk 0.40.1 is incompatible with a2a-sdk

[theta682]

Describe the Bug

The update of protobuf to >=7.0.0 breaks compatibility with a2a-sdk, which requires protobuf to be <7. See https://github.com/a2aproject/a2a-python/blob/main/pyproject.toml#L13
The bug has been introduced in #259

Steps to Reproduce

Include both sap-cloud-sdk and a2a-sdk in a project's dependencies.

Expected Behavior

uv fails to resolve dependencies

Screenshots

No response

Used Versions

• Python version via python --version: 3.13
• SAP Cloud SDK for Python version: 0.40.1
• Framework version (if applicable, e.g., Flask, FastAPI): a2a-sdk

Installed packages via pip list or uv pip list

Package list here

Code Examples

# Your code here

Stack Trace

Command failed: uv lock --upgrade-package sap-cloud-sdk
Using CPython 3.13.14 interpreter at: /opt/containerbase/tools/python/3.13.14/bin/python3
  × No solution found when resolving dependencies for split (markers:
  │ python_full_version == '3.13.*'):
  ╰─▶ Because sap-cloud-sdk>=0.43.0 depends on protobuf>=7.0.0 and
      a2a-sdk>=1.1.2 depends on protobuf>=5.29.5,<7, we can conclude that
      a2a-sdk>=1.1.2 and sap-cloud-sdk>=0.43.0 are incompatible.
      And because your project depends on a2a-sdk[all]==1.1.2 and
      sap-cloud-sdk==0.43.0, we can conclude that your project's requirements
      are unsatisfiable.

Log File

Log file

...

Affected Development Phase

Release

Impact

Blocked

Timeline

No response