Build for both protobuf 4.25.3 and 5.27.3

[traversaro]

Hardcode double protobuf pinning as a workaround for https://github.com/conda-forge/gz-common-feedstock/issues/48k, revert once conda-forge/openvino-feedstock#106 is merged.

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[traversaro]

@conda-forge-admin, please rerender

[github-actions]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[traversaro]

@conda-forge-admin please rerender

[traversaro]

Requires conda-forge/gz-msgs-feedstock#42 .

[traversaro]

Error:

____________________ ERROR collecting test/options_TEST.py _____________________
ImportError while importing test module '/home/conda/feedstock_root/build_artifacts/gz-transport14_1727676423780/work/python/test/options_TEST.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
../../../_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
../test/options_TEST.py:1: in <module>
    from gz.msgs11.stringmsg_pb2 import StringMsg
../../../_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/site-packages/gz/msgs11/stringmsg_pb2.py:9: in <module>
    from google.protobuf import runtime_version as _runtime_version
E   ImportError: cannot import name 'runtime_version' from 'google.protobuf' (/home/conda/feedstock_root/build_artifacts/gz-transport14_1727676423780/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/lib/python3.10/site-packages/google/protobuf/__init__.py)
- generated xml file: /home/conda/feedstock_root/build_artifacts/gz-transport14_1727676423780/work/python/build/test_results/options_TEST.xml -
=========================== short test summary info ============================
ERROR ../test/options_TEST.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
=============================== 1 error in 0.17s ===============================

My guess is that the gz-msgs python msgs have a runtime requirement on the given protobuf version with which they have been generated, but we are not doing that.

[traversaro]

My guess is that the gz-msgs python msgs have a runtime requirement on the given protobuf version with which they have been generated, but we are not doing that.

Fixed by conda-forge/gz-msgs-feedstock#43 .